diff --git a/tests/acceptance/conftest.py b/tests/acceptance/conftest.py
index 1965cbbc..27cf3e9e 100644
--- a/tests/acceptance/conftest.py
+++ b/tests/acceptance/conftest.py
@@ -1,18 +1,9 @@
 import pytest
+from tests.utils import Keys
 
 from aiocache import Cache, caches
 
 
-def pytest_configure():
-    """
-    Before pytest_namespace was being used to set the keys for
-    testing but the feature was removed
-    https://docs.pytest.org/en/latest/deprecations.html#pytest-namespace
-    """
-    pytest.KEY = "key"
-    pytest.KEY_1 = "random"
-
-
 @pytest.fixture(autouse=True)
 def reset_caches():
     caches._caches = {}
@@ -31,9 +22,8 @@ def redis_cache(event_loop):
     cache = Cache(Cache.REDIS, namespace="test")
     yield cache
 
-    event_loop.run_until_complete(cache.delete(pytest.KEY))
-    event_loop.run_until_complete(cache.delete(pytest.KEY_1))
-    event_loop.run_until_complete(cache.delete(pytest.KEY + "-lock"))
+    for key in Keys:
+        event_loop.run_until_complete(cache.delete(key))
     event_loop.run_until_complete(cache.close())
 
 
@@ -42,9 +32,8 @@ def memory_cache(event_loop):
     cache = Cache(namespace="test")
     yield cache
 
-    event_loop.run_until_complete(cache.delete(pytest.KEY))
-    event_loop.run_until_complete(cache.delete(pytest.KEY_1))
-    event_loop.run_until_complete(cache.delete(pytest.KEY + "-lock"))
+    for key in Keys:
+        event_loop.run_until_complete(cache.delete(key))
     event_loop.run_until_complete(cache.close())
 
 
@@ -53,9 +42,8 @@ def memcached_cache(event_loop):
     cache = Cache(Cache.MEMCACHED, namespace="test")
     yield cache
 
-    event_loop.run_until_complete(cache.delete(pytest.KEY))
-    event_loop.run_until_complete(cache.delete(pytest.KEY_1))
-    event_loop.run_until_complete(cache.delete(pytest.KEY + "-lock"))
+    for key in Keys:
+        event_loop.run_until_complete(cache.delete(key))
     event_loop.run_until_complete(cache.close())
 
 
diff --git a/tests/acceptance/test_base.py b/tests/acceptance/test_base.py
index 45a22c96..624fdebe 100644
--- a/tests/acceptance/test_base.py
+++ b/tests/acceptance/test_base.py
@@ -1,6 +1,7 @@
 import asyncio
 
 import pytest
+from tests.utils import Keys
 
 from aiocache.backends.memcached import MemcachedCache
 from aiocache.backends.memory import SimpleMemoryCache
@@ -21,142 +22,142 @@ async def test_setup(self, cache):
 
     @pytest.mark.asyncio
     async def test_get_missing(self, cache):
-        assert await cache.get(pytest.KEY) is None
-        assert await cache.get(pytest.KEY, default=1) == 1
+        assert await cache.get(Keys.KEY) is None
+        assert await cache.get(Keys.KEY, default=1) == 1
 
     @pytest.mark.asyncio
     async def test_get_existing(self, cache):
-        await cache.set(pytest.KEY, "value")
-        assert await cache.get(pytest.KEY) == "value"
+        await cache.set(Keys.KEY, "value")
+        assert await cache.get(Keys.KEY) == "value"
 
     @pytest.mark.asyncio
     async def test_multi_get(self, cache):
-        await cache.set(pytest.KEY, "value")
-        assert await cache.multi_get([pytest.KEY, pytest.KEY_1]) == ["value", None]
+        await cache.set(Keys.KEY, "value")
+        assert await cache.multi_get([Keys.KEY, Keys.KEY_1]) == ["value", None]
 
     @pytest.mark.asyncio
     async def test_delete_missing(self, cache):
-        assert await cache.delete(pytest.KEY) == 0
+        assert await cache.delete(Keys.KEY) == 0
 
     @pytest.mark.asyncio
     async def test_delete_existing(self, cache):
-        await cache.set(pytest.KEY, "value")
-        assert await cache.delete(pytest.KEY) == 1
+        await cache.set(Keys.KEY, "value")
+        assert await cache.delete(Keys.KEY) == 1
 
-        assert await cache.get(pytest.KEY) is None
+        assert await cache.get(Keys.KEY) is None
 
     @pytest.mark.asyncio
     async def test_set(self, cache):
-        assert await cache.set(pytest.KEY, "value") is True
+        assert await cache.set(Keys.KEY, "value") is True
 
     @pytest.mark.asyncio
     async def test_set_cancel_previous_ttl_handle(self, cache):
-        await cache.set(pytest.KEY, "value", ttl=2)
+        await cache.set(Keys.KEY, "value", ttl=2)
 
         await asyncio.sleep(1)
-        assert await cache.get(pytest.KEY) == "value"
-        await cache.set(pytest.KEY, "new_value", ttl=2)
+        assert await cache.get(Keys.KEY) == "value"
+        await cache.set(Keys.KEY, "new_value", ttl=2)
 
         await asyncio.sleep(1)
-        assert await cache.get(pytest.KEY) == "new_value"
+        assert await cache.get(Keys.KEY) == "new_value"
 
     @pytest.mark.asyncio
     async def test_multi_set(self, cache):
-        pairs = [(pytest.KEY, "value"), [pytest.KEY_1, "random_value"]]
+        pairs = [(Keys.KEY, "value"), [Keys.KEY_1, "random_value"]]
         assert await cache.multi_set(pairs) is True
-        assert await cache.multi_get([pytest.KEY, pytest.KEY_1]) == ["value", "random_value"]
+        assert await cache.multi_get([Keys.KEY, Keys.KEY_1]) == ["value", "random_value"]
 
     @pytest.mark.asyncio
     async def test_multi_set_with_ttl(self, cache):
-        pairs = [(pytest.KEY, "value"), [pytest.KEY_1, "random_value"]]
+        pairs = [(Keys.KEY, "value"), [Keys.KEY_1, "random_value"]]
         assert await cache.multi_set(pairs, ttl=1) is True
         await asyncio.sleep(1.1)
 
-        assert await cache.multi_get([pytest.KEY, pytest.KEY_1]) == [None, None]
+        assert await cache.multi_get([Keys.KEY, Keys.KEY_1]) == [None, None]
 
     @pytest.mark.asyncio
     async def test_set_with_ttl(self, cache):
-        await cache.set(pytest.KEY, "value", ttl=1)
+        await cache.set(Keys.KEY, "value", ttl=1)
         await asyncio.sleep(1.1)
 
-        assert await cache.get(pytest.KEY) is None
+        assert await cache.get(Keys.KEY) is None
 
     @pytest.mark.asyncio
     async def test_add_missing(self, cache):
-        assert await cache.add(pytest.KEY, "value", ttl=1) is True
+        assert await cache.add(Keys.KEY, "value", ttl=1) is True
 
     @pytest.mark.asyncio
     async def test_add_existing(self, cache):
-        assert await cache.set(pytest.KEY, "value") is True
+        assert await cache.set(Keys.KEY, "value") is True
         with pytest.raises(ValueError):
-            await cache.add(pytest.KEY, "value")
+            await cache.add(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_exists_missing(self, cache):
-        assert await cache.exists(pytest.KEY) is False
+        assert await cache.exists(Keys.KEY) is False
 
     @pytest.mark.asyncio
     async def test_exists_existing(self, cache):
-        await cache.set(pytest.KEY, "value")
-        assert await cache.exists(pytest.KEY) is True
+        await cache.set(Keys.KEY, "value")
+        assert await cache.exists(Keys.KEY) is True
 
     @pytest.mark.asyncio
     async def test_increment_missing(self, cache):
-        assert await cache.increment(pytest.KEY, delta=2) == 2
-        assert await cache.increment(pytest.KEY_1, delta=-2) == -2
+        assert await cache.increment(Keys.KEY, delta=2) == 2
+        assert await cache.increment(Keys.KEY_1, delta=-2) == -2
 
     @pytest.mark.asyncio
     async def test_increment_existing(self, cache):
-        await cache.set(pytest.KEY, 2)
-        assert await cache.increment(pytest.KEY, delta=2) == 4
-        assert await cache.increment(pytest.KEY, delta=1) == 5
-        assert await cache.increment(pytest.KEY, delta=-3) == 2
+        await cache.set(Keys.KEY, 2)
+        assert await cache.increment(Keys.KEY, delta=2) == 4
+        assert await cache.increment(Keys.KEY, delta=1) == 5
+        assert await cache.increment(Keys.KEY, delta=-3) == 2
 
     @pytest.mark.asyncio
     async def test_increment_typeerror(self, cache):
-        await cache.set(pytest.KEY, "value")
+        await cache.set(Keys.KEY, "value")
         with pytest.raises(TypeError):
-            assert await cache.increment(pytest.KEY)
+            assert await cache.increment(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_expire_existing(self, cache):
-        await cache.set(pytest.KEY, "value")
-        assert await cache.expire(pytest.KEY, 1) is True
+        await cache.set(Keys.KEY, "value")
+        assert await cache.expire(Keys.KEY, 1) is True
         await asyncio.sleep(1.1)
-        assert await cache.exists(pytest.KEY) is False
+        assert await cache.exists(Keys.KEY) is False
 
     @pytest.mark.asyncio
     async def test_expire_with_0(self, cache):
-        await cache.set(pytest.KEY, "value", 1)
-        assert await cache.expire(pytest.KEY, 0) is True
+        await cache.set(Keys.KEY, "value", 1)
+        assert await cache.expire(Keys.KEY, 0) is True
         await asyncio.sleep(1.1)
-        assert await cache.exists(pytest.KEY) is True
+        assert await cache.exists(Keys.KEY) is True
 
     @pytest.mark.asyncio
     async def test_expire_missing(self, cache):
-        assert await cache.expire(pytest.KEY, 1) is False
+        assert await cache.expire(Keys.KEY, 1) is False
 
     @pytest.mark.asyncio
     async def test_clear(self, cache):
-        await cache.set(pytest.KEY, "value")
+        await cache.set(Keys.KEY, "value")
         await cache.clear()
 
-        assert await cache.exists(pytest.KEY) is False
+        assert await cache.exists(Keys.KEY) is False
 
     @pytest.mark.asyncio
     async def test_close_pool_only_clears_resources(self, cache):
-        await cache.set(pytest.KEY, "value")
+        await cache.set(Keys.KEY, "value")
         await cache.close()
-        assert await cache.set(pytest.KEY, "value") is True
-        assert await cache.get(pytest.KEY) == "value"
+        assert await cache.set(Keys.KEY, "value") is True
+        assert await cache.get(Keys.KEY) == "value"
 
     @pytest.mark.asyncio
     async def test_single_connection(self, cache):
         pytest.skip("aioredis code is broken")
         async with cache.get_connection() as conn:
             assert isinstance(conn, _Conn)
-            assert await conn.set(pytest.KEY, "value") is True
-            assert await conn.get(pytest.KEY) == "value"
+            assert await conn.set(Keys.KEY, "value") is True
+            assert await conn.get(Keys.KEY) == "value"
 
 
 class TestMemoryCache:
@@ -167,18 +168,18 @@ async def test_accept_explicit_args(self):
 
     @pytest.mark.asyncio
     async def test_set_float_ttl(self, memory_cache):
-        await memory_cache.set(pytest.KEY, "value", ttl=0.1)
+        await memory_cache.set(Keys.KEY, "value", ttl=0.1)
         await asyncio.sleep(0.15)
 
-        assert await memory_cache.get(pytest.KEY) is None
+        assert await memory_cache.get(Keys.KEY) is None
 
     @pytest.mark.asyncio
     async def test_multi_set_float_ttl(self, memory_cache):
-        pairs = [(pytest.KEY, "value"), [pytest.KEY_1, "random_value"]]
+        pairs = [(Keys.KEY, "value"), [Keys.KEY_1, "random_value"]]
         assert await memory_cache.multi_set(pairs, ttl=0.1) is True
         await asyncio.sleep(0.15)
 
-        assert await memory_cache.multi_get([pytest.KEY, pytest.KEY_1]) == [None, None]
+        assert await memory_cache.multi_get([Keys.KEY, Keys.KEY_1]) == [None, None]
 
     @pytest.mark.asyncio
     async def test_raw(self, memory_cache):
@@ -188,10 +189,10 @@ async def test_raw(self, memory_cache):
 
     @pytest.mark.asyncio
     async def test_clear_with_namespace_memory(self, memory_cache):
-        await memory_cache.set(pytest.KEY, "value", namespace="test")
+        await memory_cache.set(Keys.KEY, "value", namespace="test")
         await memory_cache.clear(namespace="test")
 
-        assert await memory_cache.exists(pytest.KEY, namespace="test") is False
+        assert await memory_cache.exists(Keys.KEY, namespace="test") is False
 
 
 class TestMemcachedCache:
@@ -209,13 +210,13 @@ async def test_set_too_long_key(self, memcached_cache):
     @pytest.mark.asyncio
     async def test_set_float_ttl_fails(self, memcached_cache):
         with pytest.raises(TypeError) as exc_info:
-            await memcached_cache.set(pytest.KEY, "value", ttl=0.1)
+            await memcached_cache.set(Keys.KEY, "value", ttl=0.1)
         assert str(exc_info.value) == "aiomcache error: exptime not int: 0.1"
 
     @pytest.mark.asyncio
     async def test_multi_set_float_ttl(self, memcached_cache):
         with pytest.raises(TypeError) as exc_info:
-            pairs = [(pytest.KEY, "value"), [pytest.KEY_1, "random_value"]]
+            pairs = [(Keys.KEY, "value"), [Keys.KEY_1, "random_value"]]
             assert await memcached_cache.multi_set(pairs, ttl=0.1) is True
         assert str(exc_info.value) == "aiomcache error: exptime not int: 0.1"
 
@@ -228,16 +229,16 @@ async def test_raw(self, memcached_cache):
 
     @pytest.mark.asyncio
     async def test_clear_with_namespace_memcached(self, memcached_cache):
-        await memcached_cache.set(pytest.KEY, "value", namespace="test")
+        await memcached_cache.set(Keys.KEY, "value", namespace="test")
 
         with pytest.raises(ValueError):
             await memcached_cache.clear(namespace="test")
 
-        assert await memcached_cache.exists(pytest.KEY, namespace="test") is True
+        assert await memcached_cache.exists(Keys.KEY, namespace="test") is True
 
     @pytest.mark.asyncio
     async def test_close(self, memcached_cache):
-        await memcached_cache.set(pytest.KEY, "value")
+        await memcached_cache.set(Keys.KEY, "value")
         await memcached_cache._close()
         assert memcached_cache.client._pool._pool.qsize() == 0
 
@@ -250,18 +251,18 @@ async def test_accept_explicit_args(self):
 
     @pytest.mark.asyncio
     async def test_float_ttl(self, redis_cache):
-        await redis_cache.set(pytest.KEY, "value", ttl=0.1)
+        await redis_cache.set(Keys.KEY, "value", ttl=0.1)
         await asyncio.sleep(0.15)
 
-        assert await redis_cache.get(pytest.KEY) is None
+        assert await redis_cache.get(Keys.KEY) is None
 
     @pytest.mark.asyncio
     async def test_multi_set_float_ttl(self, redis_cache):
-        pairs = [(pytest.KEY, "value"), [pytest.KEY_1, "random_value"]]
+        pairs = [(Keys.KEY, "value"), [Keys.KEY_1, "random_value"]]
         assert await redis_cache.multi_set(pairs, ttl=0.1) is True
         await asyncio.sleep(0.15)
 
-        assert await redis_cache.multi_get([pytest.KEY, pytest.KEY_1]) == [None, None]
+        assert await redis_cache.multi_get([Keys.KEY, Keys.KEY_1]) == [None, None]
 
     @pytest.mark.asyncio
     async def test_raw(self, redis_cache):
@@ -271,13 +272,13 @@ async def test_raw(self, redis_cache):
 
     @pytest.mark.asyncio
     async def test_clear_with_namespace_redis(self, redis_cache):
-        await redis_cache.set(pytest.KEY, "value", namespace="test")
+        await redis_cache.set(Keys.KEY, "value", namespace="test")
         await redis_cache.clear(namespace="test")
 
-        assert await redis_cache.exists(pytest.KEY, namespace="test") is False
+        assert await redis_cache.exists(Keys.KEY, namespace="test") is False
 
     @pytest.mark.asyncio
     async def test_close(self, redis_cache):
-        await redis_cache.set(pytest.KEY, "value")
+        await redis_cache.set(Keys.KEY, "value")
         await redis_cache._close()
         assert redis_cache._pool.size == 0
diff --git a/tests/acceptance/test_decorators.py b/tests/acceptance/test_decorators.py
index 03cf6773..96f0808f 100644
--- a/tests/acceptance/test_decorators.py
+++ b/tests/acceptance/test_decorators.py
@@ -3,13 +3,14 @@
 from unittest import mock
 
 import pytest
+from tests.utils import Keys
 
 from aiocache import cached, cached_stampede, multi_cached
 
 
 async def return_dict(keys=None):
     ret = {}
-    for value, key in enumerate(keys or [pytest.KEY, pytest.KEY_1]):
+    for value, key in enumerate(keys or [Keys.KEY, Keys.KEY_1]):
         ret[key] = str(value)
     return ret
 
@@ -28,16 +29,16 @@ def default_cache(self, mocker, cache):
 
     @pytest.mark.asyncio
     async def test_cached_ttl(self, cache):
-        @cached(ttl=1, key=pytest.KEY)
+        @cached(ttl=1, key=Keys.KEY)
         async def fn():
             return str(random.randint(1, 50))
 
         resp1 = await fn()
         resp2 = await fn()
 
-        assert await cache.get(pytest.KEY) == resp1 == resp2
+        assert await cache.get(Keys.KEY) == resp1 == resp2
         await asyncio.sleep(1)
-        assert await cache.get(pytest.KEY) is None
+        assert await cache.get(Keys.KEY) is None
 
     @pytest.mark.asyncio
     async def test_cached_key_builder(self, cache):
@@ -105,7 +106,7 @@ def default_cache(self, mocker, cache):
     async def test_multi_cached(self, cache):
         multi_cached_decorator = multi_cached("keys")
 
-        default_keys = {pytest.KEY, pytest.KEY_1}
+        default_keys = {Keys.KEY, Keys.KEY_1}
         await multi_cached_decorator(return_dict)(keys=default_keys)
 
         for key in default_keys:
@@ -115,10 +116,10 @@ async def test_multi_cached(self, cache):
     async def test_keys_without_kwarg(self, cache):
         @multi_cached("keys")
         async def fn(keys):
-            return {pytest.KEY: 1}
+            return {Keys.KEY: 1}
 
-        await fn([pytest.KEY])
-        assert await cache.exists(pytest.KEY) is True
+        await fn([Keys.KEY])
+        assert await cache.exists(Keys.KEY) is True
 
     @pytest.mark.asyncio
     async def test_multi_cached_key_builder(self, cache):
@@ -127,21 +128,21 @@ def build_key(key, f, self, keys, market="ES"):
 
         @multi_cached(keys_from_attr="keys", key_builder=build_key)
         async def fn(self, keys, market="ES"):
-            return {pytest.KEY: 1, pytest.KEY_1: 2}
+            return {Keys.KEY: 1, Keys.KEY_1: 2}
 
-        await fn("self", keys=[pytest.KEY, pytest.KEY_1])
-        assert await cache.exists("fn_" + pytest.KEY + "_ES") is True
-        assert await cache.exists("fn_" + pytest.KEY_1 + "_ES") is True
+        await fn("self", keys=[Keys.KEY, Keys.KEY_1])
+        assert await cache.exists("fn_" + Keys.KEY + "_ES") is True
+        assert await cache.exists("fn_" + Keys.KEY_1 + "_ES") is True
 
     @pytest.mark.asyncio
     async def test_fn_with_args(self, cache):
         @multi_cached("keys")
         async def fn(keys, *args):
             assert len(args) == 1
-            return {pytest.KEY: 1}
+            return {Keys.KEY: 1}
 
-        await fn([pytest.KEY], "arg")
-        assert await cache.exists(pytest.KEY) is True
+        await fn([Keys.KEY], "arg")
+        assert await cache.exists(Keys.KEY) is True
 
     @pytest.mark.asyncio
     async def test_double_decorator(self, cache):
@@ -154,7 +155,7 @@ async def wrapper(*args, **kwargs):
         @dummy_d
         @multi_cached("keys")
         async def fn(keys):
-            return {pytest.KEY: 1}
+            return {Keys.KEY: 1}
 
-        await fn([pytest.KEY])
-        assert await cache.exists(pytest.KEY) is True
+        await fn([Keys.KEY])
+        assert await cache.exists(Keys.KEY) is True
diff --git a/tests/acceptance/test_lock.py b/tests/acceptance/test_lock.py
index 885832b7..4c109b2c 100644
--- a/tests/acceptance/test_lock.py
+++ b/tests/acceptance/test_lock.py
@@ -1,6 +1,7 @@
 import asyncio
 
 import pytest
+from tests.utils import Keys
 
 from aiocache.lock import OptimisticLock, OptimisticLockError, RedLock
 from aiocache.serializers import StringSerializer
@@ -8,7 +9,7 @@
 
 @pytest.fixture
 def lock(cache):
-    return RedLock(cache, pytest.KEY, 20)
+    return RedLock(cache, Keys.KEY, 20)
 
 
 class TestRedLock:
@@ -16,7 +17,7 @@ class TestRedLock:
     async def test_acquire(self, cache, lock):
         cache.serializer = StringSerializer()
         async with lock:
-            assert await cache.get(pytest.KEY + "-lock") == lock._value
+            assert await cache.get(Keys.KEY_LOCK) == lock._value
 
     @pytest.mark.asyncio
     async def test_release_does_nothing_when_no_lock(self, lock):
@@ -26,7 +27,7 @@ async def test_release_does_nothing_when_no_lock(self, lock):
     async def test_acquire_release(self, cache, lock):
         async with lock:
             pass
-        assert await cache.get(pytest.KEY + "-lock") is None
+        assert await cache.get(Keys.KEY_LOCK) is None
 
     @pytest.mark.asyncio
     @pytest.mark.skip(reason="flaky test")
@@ -36,16 +37,16 @@ async def test_locking_dogpile(self, mocker, cache):
         mocker.spy(cache, "_add")
 
         async def dummy():
-            res = await cache.get(pytest.KEY)
+            res = await cache.get(Keys.KEY)
             if res is not None:
                 return res
 
-            async with RedLock(cache, pytest.KEY, lease=5):
-                res = await cache.get(pytest.KEY)
+            async with RedLock(cache, Keys.KEY, lease=5):
+                res = await cache.get(Keys.KEY)
                 if res is not None:
                     return res
                 await asyncio.sleep(0.1)
-                await cache.set(pytest.KEY, "value")
+                await cache.set(Keys.KEY, "value")
 
         await asyncio.gather(dummy(), dummy(), dummy(), dummy())
         assert cache._add.call_count == 4
@@ -58,16 +59,16 @@ async def test_locking_dogpile_lease_expiration(self, mocker, cache):
         mocker.spy(cache, "set")
 
         async def dummy():
-            res = await cache.get(pytest.KEY)
+            res = await cache.get(Keys.KEY)
             if res is not None:
                 return res
 
-            async with RedLock(cache, pytest.KEY, lease=1):
-                res = await cache.get(pytest.KEY)
+            async with RedLock(cache, Keys.KEY, lease=1):
+                res = await cache.get(Keys.KEY)
                 if res is not None:
                     return res
                 await asyncio.sleep(1.1)
-                await cache.set(pytest.KEY, "value")
+                await cache.set(Keys.KEY, "value")
 
         await asyncio.gather(dummy(), dummy(), dummy(), dummy())
         assert cache.get.call_count == 8
@@ -76,7 +77,7 @@ async def dummy():
     @pytest.mark.asyncio
     async def test_locking_dogpile_propagates_exceptions(self, cache):
         async def dummy():
-            async with RedLock(cache, pytest.KEY, lease=1):
+            async with RedLock(cache, Keys.KEY, lease=1):
                 raise ValueError()
 
         with pytest.raises(ValueError):
@@ -86,7 +87,7 @@ async def dummy():
 class TestMemoryRedLock:
     @pytest.fixture
     def lock(self, memory_cache):
-        return RedLock(memory_cache, pytest.KEY, 20)
+        return RedLock(memory_cache, Keys.KEY, 20)
 
     @pytest.mark.asyncio
     async def test_release_wrong_token_fails(self, lock):
@@ -96,13 +97,13 @@ async def test_release_wrong_token_fails(self, lock):
 
     @pytest.mark.asyncio
     async def test_release_wrong_client_fails(self, memory_cache, lock):
-        wrong_lock = RedLock(memory_cache, pytest.KEY, 20)
+        wrong_lock = RedLock(memory_cache, Keys.KEY, 20)
         await lock.__aenter__()
         assert await wrong_lock.__aexit__("exc_type", "exc_value", "traceback") is None
 
     @pytest.mark.asyncio
     async def test_float_lease(self, memory_cache):
-        lock = RedLock(memory_cache, pytest.KEY, 0.1)
+        lock = RedLock(memory_cache, Keys.KEY, 0.1)
         await lock.__aenter__()
         await asyncio.sleep(0.2)
         assert await lock.__aexit__("exc_type", "exc_value", "traceback") is None
@@ -111,7 +112,7 @@ async def test_float_lease(self, memory_cache):
 class TestRedisRedLock:
     @pytest.fixture
     def lock(self, redis_cache):
-        return RedLock(redis_cache, pytest.KEY, 20)
+        return RedLock(redis_cache, Keys.KEY, 20)
 
     @pytest.mark.asyncio
     async def test_release_wrong_token_fails(self, lock):
@@ -121,13 +122,13 @@ async def test_release_wrong_token_fails(self, lock):
 
     @pytest.mark.asyncio
     async def test_release_wrong_client_fails(self, redis_cache, lock):
-        wrong_lock = RedLock(redis_cache, pytest.KEY, 20)
+        wrong_lock = RedLock(redis_cache, Keys.KEY, 20)
         await lock.__aenter__()
         assert await wrong_lock.__aexit__("exc_type", "exc_value", "traceback") is None
 
     @pytest.mark.asyncio
     async def test_float_lease(self, redis_cache):
-        lock = RedLock(redis_cache, pytest.KEY, 0.1)
+        lock = RedLock(redis_cache, Keys.KEY, 0.1)
         await lock.__aenter__()
         await asyncio.sleep(0.2)
         assert await lock.__aexit__("exc_type", "exc_value", "traceback") is None
@@ -136,7 +137,7 @@ async def test_float_lease(self, redis_cache):
 class TestMemcachedRedLock:
     @pytest.fixture
     def lock(self, memcached_cache):
-        return RedLock(memcached_cache, pytest.KEY, 20)
+        return RedLock(memcached_cache, Keys.KEY, 20)
 
     @pytest.mark.asyncio
     async def test_release_wrong_token_succeeds_meh(self, lock):
@@ -146,13 +147,13 @@ async def test_release_wrong_token_succeeds_meh(self, lock):
 
     @pytest.mark.asyncio
     async def test_release_wrong_client_succeeds_meh(self, memcached_cache, lock):
-        wrong_lock = RedLock(memcached_cache, pytest.KEY, 20)
+        wrong_lock = RedLock(memcached_cache, Keys.KEY, 20)
         await lock.__aenter__()
         assert await wrong_lock.__aexit__("exc_type", "exc_value", "traceback") is None
 
     @pytest.mark.asyncio
     async def test_float_lease(self, memcached_cache):
-        lock = RedLock(memcached_cache, pytest.KEY, 0.1)
+        lock = RedLock(memcached_cache, Keys.KEY, 0.1)
         with pytest.raises(TypeError):
             await lock.__aenter__()
 
@@ -160,13 +161,13 @@ async def test_float_lease(self, memcached_cache):
 class TestOptimisticLock:
     @pytest.fixture
     def lock(self, cache):
-        return OptimisticLock(cache, pytest.KEY)
+        return OptimisticLock(cache, Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_acquire(self, cache, lock):
-        await cache.set(pytest.KEY, "value")
+        await cache.set(Keys.KEY, "value")
         async with lock:
-            assert lock._token == await cache._gets(cache._build_key(pytest.KEY))
+            assert lock._token == await cache._gets(cache._build_key(Keys.KEY))
 
     @pytest.mark.asyncio
     async def test_release_does_nothing(self, lock):
@@ -175,62 +176,62 @@ async def test_release_does_nothing(self, lock):
     @pytest.mark.asyncio
     async def test_check_and_set_not_existing_never_fails(self, cache, lock):
         async with lock as locked:
-            await cache.set(pytest.KEY, "conflicting_value")
+            await cache.set(Keys.KEY, "conflicting_value")
             await locked.cas("value")
 
-        assert await cache.get(pytest.KEY) == "value"
+        assert await cache.get(Keys.KEY) == "value"
 
     @pytest.mark.asyncio
     async def test_check_and_set(self, cache, lock):
-        await cache.set(pytest.KEY, "previous_value")
+        await cache.set(Keys.KEY, "previous_value")
         async with lock as locked:
             await locked.cas("value")
 
-        assert await cache.get(pytest.KEY) == "value"
+        assert await cache.get(Keys.KEY) == "value"
 
     @pytest.mark.asyncio
     async def test_check_and_set_fail(self, cache, lock):
-        await cache.set(pytest.KEY, "previous_value")
+        await cache.set(Keys.KEY, "previous_value")
         with pytest.raises(OptimisticLockError):
             async with lock as locked:
-                await cache.set(pytest.KEY, "conflicting_value")
+                await cache.set(Keys.KEY, "conflicting_value")
                 await locked.cas("value")
 
     @pytest.mark.asyncio
     async def test_check_and_set_with_int_ttl(self, cache, lock):
-        await cache.set(pytest.KEY, "previous_value")
+        await cache.set(Keys.KEY, "previous_value")
         async with lock as locked:
             await locked.cas("value", ttl=1)
 
         await asyncio.sleep(1)
-        assert await cache.get(pytest.KEY) is None
+        assert await cache.get(Keys.KEY) is None
 
 
 class TestMemoryOptimisticLock:
     @pytest.fixture
     def lock(self, memory_cache):
-        return OptimisticLock(memory_cache, pytest.KEY)
+        return OptimisticLock(memory_cache, Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_check_and_set_with_float_ttl(self, memory_cache, lock):
-        await memory_cache.set(pytest.KEY, "previous_value")
+        await memory_cache.set(Keys.KEY, "previous_value")
         async with lock as locked:
             await locked.cas("value", ttl=0.1)
 
         await asyncio.sleep(1)
-        assert await memory_cache.get(pytest.KEY) is None
+        assert await memory_cache.get(Keys.KEY) is None
 
 
 class TestRedisOptimisticLock:
     @pytest.fixture
     def lock(self, redis_cache):
-        return OptimisticLock(redis_cache, pytest.KEY)
+        return OptimisticLock(redis_cache, Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_check_and_set_with_float_ttl(self, redis_cache, lock):
-        await redis_cache.set(pytest.KEY, "previous_value")
+        await redis_cache.set(Keys.KEY, "previous_value")
         async with lock as locked:
             await locked.cas("value", ttl=0.1)
 
         await asyncio.sleep(1)
-        assert await redis_cache.get(pytest.KEY) is None
+        assert await redis_cache.get(Keys.KEY) is None
diff --git a/tests/acceptance/test_serializers.py b/tests/acceptance/test_serializers.py
index c0669124..ee50a846 100644
--- a/tests/acceptance/test_serializers.py
+++ b/tests/acceptance/test_serializers.py
@@ -3,6 +3,7 @@
 
 import pytest
 from marshmallow import Schema, fields, post_load
+from tests.utils import Keys
 
 try:
     import ujson as json
@@ -66,22 +67,22 @@ class TestNullSerializer:
     @pytest.mark.asyncio
     async def test_set_get_types(self, memory_cache, obj):
         memory_cache.serializer = NullSerializer()
-        assert await memory_cache.set(pytest.KEY, obj) is True
-        assert await memory_cache.get(pytest.KEY) is obj
+        assert await memory_cache.set(Keys.KEY, obj) is True
+        assert await memory_cache.get(Keys.KEY) is obj
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_add_get_types(self, memory_cache, obj):
         memory_cache.serializer = NullSerializer()
-        assert await memory_cache.add(pytest.KEY, obj) is True
-        assert await memory_cache.get(pytest.KEY) is obj
+        assert await memory_cache.add(Keys.KEY, obj) is True
+        assert await memory_cache.get(Keys.KEY) is obj
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_multi_set_multi_get_types(self, memory_cache, obj):
         memory_cache.serializer = NullSerializer()
-        assert await memory_cache.multi_set([(pytest.KEY, obj)]) is True
-        assert (await memory_cache.multi_get([pytest.KEY]))[0] is obj
+        assert await memory_cache.multi_set([(Keys.KEY, obj)]) is True
+        assert (await memory_cache.multi_get([Keys.KEY]))[0] is obj
 
 
 class TestStringSerializer:
@@ -92,22 +93,22 @@ class TestStringSerializer:
     @pytest.mark.asyncio
     async def test_set_get_types(self, cache, obj):
         cache.serializer = StringSerializer()
-        assert await cache.set(pytest.KEY, obj) is True
-        assert await cache.get(pytest.KEY) == str(obj)
+        assert await cache.set(Keys.KEY, obj) is True
+        assert await cache.get(Keys.KEY) == str(obj)
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_add_get_types(self, cache, obj):
         cache.serializer = StringSerializer()
-        assert await cache.add(pytest.KEY, obj) is True
-        assert await cache.get(pytest.KEY) == str(obj)
+        assert await cache.add(Keys.KEY, obj) is True
+        assert await cache.get(Keys.KEY) == str(obj)
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_multi_set_multi_get_types(self, cache, obj):
         cache.serializer = StringSerializer()
-        assert await cache.multi_set([(pytest.KEY, obj)]) is True
-        assert await cache.multi_get([pytest.KEY]) == [str(obj)]
+        assert await cache.multi_set([(Keys.KEY, obj)]) is True
+        assert await cache.multi_get([Keys.KEY]) == [str(obj)]
 
 
 class TestJsonSerializer:
@@ -118,22 +119,22 @@ class TestJsonSerializer:
     @pytest.mark.asyncio
     async def test_set_get_types(self, cache, obj):
         cache.serializer = JsonSerializer()
-        assert await cache.set(pytest.KEY, obj) is True
-        assert await cache.get(pytest.KEY) == json.loads(json.dumps(obj))
+        assert await cache.set(Keys.KEY, obj) is True
+        assert await cache.get(Keys.KEY) == json.loads(json.dumps(obj))
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_add_get_types(self, cache, obj):
         cache.serializer = JsonSerializer()
-        assert await cache.add(pytest.KEY, obj) is True
-        assert await cache.get(pytest.KEY) == json.loads(json.dumps(obj))
+        assert await cache.add(Keys.KEY, obj) is True
+        assert await cache.get(Keys.KEY) == json.loads(json.dumps(obj))
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_multi_set_multi_get_types(self, cache, obj):
         cache.serializer = JsonSerializer()
-        assert await cache.multi_set([(pytest.KEY, obj)]) is True
-        assert await cache.multi_get([pytest.KEY]) == [json.loads(json.dumps(obj))]
+        assert await cache.multi_set([(Keys.KEY, obj)]) is True
+        assert await cache.multi_get([Keys.KEY]) == [json.loads(json.dumps(obj))]
 
 
 class TestPickleSerializer:
@@ -144,36 +145,36 @@ class TestPickleSerializer:
     @pytest.mark.asyncio
     async def test_set_get_types(self, cache, obj):
         cache.serializer = PickleSerializer()
-        assert await cache.set(pytest.KEY, obj) is True
-        assert await cache.get(pytest.KEY) == pickle.loads(pickle.dumps(obj))
+        assert await cache.set(Keys.KEY, obj) is True
+        assert await cache.get(Keys.KEY) == pickle.loads(pickle.dumps(obj))
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_add_get_types(self, cache, obj):
         cache.serializer = PickleSerializer()
-        assert await cache.add(pytest.KEY, obj) is True
-        assert await cache.get(pytest.KEY) == pickle.loads(pickle.dumps(obj))
+        assert await cache.add(Keys.KEY, obj) is True
+        assert await cache.get(Keys.KEY) == pickle.loads(pickle.dumps(obj))
 
     @pytest.mark.parametrize("obj", TYPES)
     @pytest.mark.asyncio
     async def test_multi_set_multi_get_types(self, cache, obj):
         cache.serializer = PickleSerializer()
-        assert await cache.multi_set([(pytest.KEY, obj)]) is True
-        assert await cache.multi_get([pytest.KEY]) == [pickle.loads(pickle.dumps(obj))]
+        assert await cache.multi_set([(Keys.KEY, obj)]) is True
+        assert await cache.multi_get([Keys.KEY]) == [pickle.loads(pickle.dumps(obj))]
 
 
 class TestAltSerializers:
     @pytest.mark.asyncio
     async def test_get_set_alt_serializer_functions(self, cache):
         cache.serializer = StringSerializer()
-        await cache.set(pytest.KEY, "value", dumps_fn=dumps)
-        assert await cache.get(pytest.KEY) == "v4lu3"
-        assert await cache.get(pytest.KEY, loads_fn=loads) == "value"
+        await cache.set(Keys.KEY, "value", dumps_fn=dumps)
+        assert await cache.get(Keys.KEY) == "v4lu3"
+        assert await cache.get(Keys.KEY, loads_fn=loads) == "value"
 
     @pytest.mark.asyncio
     async def test_get_set_alt_serializer_class(self, cache):
         my_serializer = MyTypeSchema()
         my_obj = MyType()
         cache.serializer = my_serializer
-        await cache.set(pytest.KEY, my_obj)
-        assert await cache.get(pytest.KEY) == my_serializer.loads(my_serializer.dumps(my_obj))
+        await cache.set(Keys.KEY, my_obj)
+        assert await cache.get(Keys.KEY) == my_serializer.loads(my_serializer.dumps(my_obj))
diff --git a/tests/ut/backends/test_memcached.py b/tests/ut/backends/test_memcached.py
index e7d93fda..1b32c914 100644
--- a/tests/ut/backends/test_memcached.py
+++ b/tests/ut/backends/test_memcached.py
@@ -2,6 +2,7 @@
 
 import aiomcache
 import pytest
+from tests.utils import Keys
 
 from aiocache.backends.memcached import MemcachedBackend, MemcachedCache
 from aiocache.base import BaseCache
@@ -47,172 +48,172 @@ def test_setup_casts(self):
     @pytest.mark.asyncio
     async def test_get(self, memcached):
         memcached.client.get.return_value = b"value"
-        assert await memcached._get(pytest.KEY) == "value"
-        memcached.client.get.assert_called_with(pytest.KEY)
+        assert await memcached._get(Keys.KEY) == "value"
+        memcached.client.get.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_gets(self, memcached):
         memcached.client.gets.return_value = b"value", 12345
-        assert await memcached._gets(pytest.KEY) == 12345
-        memcached.client.gets.assert_called_with(pytest.KEY.encode())
+        assert await memcached._gets(Keys.KEY) == 12345
+        memcached.client.gets.assert_called_with(Keys.KEY.encode())
 
     @pytest.mark.asyncio
     async def test_get_none(self, memcached):
         memcached.client.get.return_value = None
-        assert await memcached._get(pytest.KEY) is None
-        memcached.client.get.assert_called_with(pytest.KEY)
+        assert await memcached._get(Keys.KEY) is None
+        memcached.client.get.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_get_no_encoding(self, memcached):
         memcached.client.get.return_value = b"value"
-        assert await memcached._get(pytest.KEY, encoding=None) == b"value"
-        memcached.client.get.assert_called_with(pytest.KEY)
+        assert await memcached._get(Keys.KEY, encoding=None) == b"value"
+        memcached.client.get.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_set(self, memcached):
-        await memcached._set(pytest.KEY, "value")
-        memcached.client.set.assert_called_with(pytest.KEY, b"value", exptime=0)
+        await memcached._set(Keys.KEY, "value")
+        memcached.client.set.assert_called_with(Keys.KEY, b"value", exptime=0)
 
-        await memcached._set(pytest.KEY, "value", ttl=1)
-        memcached.client.set.assert_called_with(pytest.KEY, b"value", exptime=1)
+        await memcached._set(Keys.KEY, "value", ttl=1)
+        memcached.client.set.assert_called_with(Keys.KEY, b"value", exptime=1)
 
     @pytest.mark.asyncio
     async def test_set_float_ttl(self, memcached):
         memcached.client.set.side_effect = aiomcache.exceptions.ValidationException("msg")
         with pytest.raises(TypeError) as exc_info:
-            await memcached._set(pytest.KEY, "value", ttl=0.1)
+            await memcached._set(Keys.KEY, "value", ttl=0.1)
         assert str(exc_info.value) == "aiomcache error: msg"
 
     @pytest.mark.asyncio
     async def test_set_cas_token(self, mocker, memcached):
         mocker.spy(memcached, "_cas")
-        await memcached._set(pytest.KEY, "value", _cas_token="token")
-        memcached._cas.assert_called_with(pytest.KEY, b"value", "token", ttl=0, _conn=None)
+        await memcached._set(Keys.KEY, "value", _cas_token="token")
+        memcached._cas.assert_called_with(Keys.KEY, b"value", "token", ttl=0, _conn=None)
 
     @pytest.mark.asyncio
     async def test_cas(self, mocker, memcached):
         memcached.client.cas.return_value = True
-        assert await memcached._cas(pytest.KEY, b"value", "token", ttl=0) is True
-        memcached.client.cas.assert_called_with(pytest.KEY, b"value", "token", exptime=0)
+        assert await memcached._cas(Keys.KEY, b"value", "token", ttl=0) is True
+        memcached.client.cas.assert_called_with(Keys.KEY, b"value", "token", exptime=0)
 
     @pytest.mark.asyncio
     async def test_cas_fail(self, mocker, memcached):
         memcached.client.cas.return_value = False
-        assert await memcached._cas(pytest.KEY, b"value", "token", ttl=0) is False
-        memcached.client.cas.assert_called_with(pytest.KEY, b"value", "token", exptime=0)
+        assert await memcached._cas(Keys.KEY, b"value", "token", ttl=0) is False
+        memcached.client.cas.assert_called_with(Keys.KEY, b"value", "token", exptime=0)
 
     @pytest.mark.asyncio
     async def test_multi_get(self, memcached):
         memcached.client.multi_get.return_value = [b"value", b"random"]
-        assert await memcached._multi_get([pytest.KEY, pytest.KEY_1]) == ["value", "random"]
-        memcached.client.multi_get.assert_called_with(pytest.KEY, pytest.KEY_1)
+        assert await memcached._multi_get([Keys.KEY, Keys.KEY_1]) == ["value", "random"]
+        memcached.client.multi_get.assert_called_with(Keys.KEY, Keys.KEY_1)
 
     @pytest.mark.asyncio
     async def test_multi_get_none(self, memcached):
         memcached.client.multi_get.return_value = [b"value", None]
-        assert await memcached._multi_get([pytest.KEY, pytest.KEY_1]) == ["value", None]
-        memcached.client.multi_get.assert_called_with(pytest.KEY, pytest.KEY_1)
+        assert await memcached._multi_get([Keys.KEY, Keys.KEY_1]) == ["value", None]
+        memcached.client.multi_get.assert_called_with(Keys.KEY, Keys.KEY_1)
 
     @pytest.mark.asyncio
     async def test_multi_get_no_encoding(self, memcached):
         memcached.client.multi_get.return_value = [b"value", None]
-        assert await memcached._multi_get([pytest.KEY, pytest.KEY_1], encoding=None) == [
+        assert await memcached._multi_get([Keys.KEY, Keys.KEY_1], encoding=None) == [
             b"value",
             None,
         ]
-        memcached.client.multi_get.assert_called_with(pytest.KEY, pytest.KEY_1)
+        memcached.client.multi_get.assert_called_with(Keys.KEY, Keys.KEY_1)
 
     @pytest.mark.asyncio
     async def test_multi_set(self, memcached):
-        await memcached._multi_set([(pytest.KEY, "value"), (pytest.KEY_1, "random")])
-        memcached.client.set.assert_any_call(pytest.KEY, b"value", exptime=0)
-        memcached.client.set.assert_any_call(pytest.KEY_1, b"random", exptime=0)
+        await memcached._multi_set([(Keys.KEY, "value"), (Keys.KEY_1, "random")])
+        memcached.client.set.assert_any_call(Keys.KEY, b"value", exptime=0)
+        memcached.client.set.assert_any_call(Keys.KEY_1, b"random", exptime=0)
         assert memcached.client.set.call_count == 2
 
-        await memcached._multi_set([(pytest.KEY, "value"), (pytest.KEY_1, "random")], ttl=1)
-        memcached.client.set.assert_any_call(pytest.KEY, b"value", exptime=1)
-        memcached.client.set.assert_any_call(pytest.KEY_1, b"random", exptime=1)
+        await memcached._multi_set([(Keys.KEY, "value"), (Keys.KEY_1, "random")], ttl=1)
+        memcached.client.set.assert_any_call(Keys.KEY, b"value", exptime=1)
+        memcached.client.set.assert_any_call(Keys.KEY_1, b"random", exptime=1)
         assert memcached.client.set.call_count == 4
 
     @pytest.mark.asyncio
     async def test_multi_set_float_ttl(self, memcached):
         memcached.client.set.side_effect = aiomcache.exceptions.ValidationException("msg")
         with pytest.raises(TypeError) as exc_info:
-            await memcached._multi_set([(pytest.KEY, "value"), (pytest.KEY_1, "random")], ttl=0.1)
+            await memcached._multi_set([(Keys.KEY, "value"), (Keys.KEY_1, "random")], ttl=0.1)
         assert str(exc_info.value) == "aiomcache error: msg"
 
     @pytest.mark.asyncio
     async def test_add(self, memcached):
-        await memcached._add(pytest.KEY, "value")
-        memcached.client.add.assert_called_with(pytest.KEY, b"value", exptime=0)
+        await memcached._add(Keys.KEY, "value")
+        memcached.client.add.assert_called_with(Keys.KEY, b"value", exptime=0)
 
-        await memcached._add(pytest.KEY, "value", ttl=1)
-        memcached.client.add.assert_called_with(pytest.KEY, b"value", exptime=1)
+        await memcached._add(Keys.KEY, "value", ttl=1)
+        memcached.client.add.assert_called_with(Keys.KEY, b"value", exptime=1)
 
     @pytest.mark.asyncio
     async def test_add_existing(self, memcached):
         memcached.client.add.return_value = False
         with pytest.raises(ValueError):
-            await memcached._add(pytest.KEY, "value")
+            await memcached._add(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_add_float_ttl(self, memcached):
         memcached.client.add.side_effect = aiomcache.exceptions.ValidationException("msg")
         with pytest.raises(TypeError) as exc_info:
-            await memcached._add(pytest.KEY, "value", 0.1)
+            await memcached._add(Keys.KEY, "value", 0.1)
         assert str(exc_info.value) == "aiomcache error: msg"
 
     @pytest.mark.asyncio
     async def test_exists(self, memcached):
-        await memcached._exists(pytest.KEY)
-        memcached.client.append.assert_called_with(pytest.KEY, b"")
+        await memcached._exists(Keys.KEY)
+        memcached.client.append.assert_called_with(Keys.KEY, b"")
 
     @pytest.mark.asyncio
     async def test_increment(self, memcached):
-        await memcached._increment(pytest.KEY, 2)
-        memcached.client.incr.assert_called_with(pytest.KEY, 2)
+        await memcached._increment(Keys.KEY, 2)
+        memcached.client.incr.assert_called_with(Keys.KEY, 2)
 
     @pytest.mark.asyncio
     async def test_increment_negative(self, memcached):
-        await memcached._increment(pytest.KEY, -2)
-        memcached.client.decr.assert_called_with(pytest.KEY, 2)
+        await memcached._increment(Keys.KEY, -2)
+        memcached.client.decr.assert_called_with(Keys.KEY, 2)
 
     @pytest.mark.asyncio
     async def test_increment_missing(self, memcached):
         memcached.client.incr.side_effect = aiomcache.exceptions.ClientException("NOT_FOUND")
-        await memcached._increment(pytest.KEY, 2)
-        memcached.client.incr.assert_called_with(pytest.KEY, 2)
-        memcached.client.set.assert_called_with(pytest.KEY, b"2", exptime=0)
+        await memcached._increment(Keys.KEY, 2)
+        memcached.client.incr.assert_called_with(Keys.KEY, 2)
+        memcached.client.set.assert_called_with(Keys.KEY, b"2", exptime=0)
 
     @pytest.mark.asyncio
     async def test_increment_missing_negative(self, memcached):
         memcached.client.decr.side_effect = aiomcache.exceptions.ClientException("NOT_FOUND")
-        await memcached._increment(pytest.KEY, -2)
-        memcached.client.decr.assert_called_with(pytest.KEY, 2)
-        memcached.client.set.assert_called_with(pytest.KEY, b"-2", exptime=0)
+        await memcached._increment(Keys.KEY, -2)
+        memcached.client.decr.assert_called_with(Keys.KEY, 2)
+        memcached.client.set.assert_called_with(Keys.KEY, b"-2", exptime=0)
 
     @pytest.mark.asyncio
     async def test_increment_typerror(self, memcached):
         memcached.client.incr.side_effect = aiomcache.exceptions.ClientException("msg")
         with pytest.raises(TypeError) as exc_info:
-            await memcached._increment(pytest.KEY, 2)
+            await memcached._increment(Keys.KEY, 2)
         assert str(exc_info.value) == "aiomcache error: msg"
 
     @pytest.mark.asyncio
     async def test_expire(self, memcached):
-        await memcached._expire(pytest.KEY, 1)
-        memcached.client.touch.assert_called_with(pytest.KEY, 1)
+        await memcached._expire(Keys.KEY, 1)
+        memcached.client.touch.assert_called_with(Keys.KEY, 1)
 
     @pytest.mark.asyncio
     async def test_delete(self, memcached):
-        assert await memcached._delete(pytest.KEY) == 1
-        memcached.client.delete.assert_called_with(pytest.KEY)
+        assert await memcached._delete(Keys.KEY) == 1
+        memcached.client.delete.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_delete_missing(self, memcached):
         memcached.client.delete.return_value = False
-        assert await memcached._delete(pytest.KEY) == 0
-        memcached.client.delete.assert_called_with(pytest.KEY)
+        assert await memcached._delete(Keys.KEY) == 0
+        memcached.client.delete.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_clear(self, memcached):
@@ -226,23 +227,23 @@ async def test_clear_with_namespace(self, memcached):
 
     @pytest.mark.asyncio
     async def test_raw(self, memcached):
-        await memcached._raw("get", pytest.KEY)
-        await memcached._raw("set", pytest.KEY, 1)
-        memcached.client.get.assert_called_with(pytest.KEY)
-        memcached.client.set.assert_called_with(pytest.KEY, 1)
+        await memcached._raw("get", Keys.KEY)
+        await memcached._raw("set", Keys.KEY, 1)
+        memcached.client.get.assert_called_with(Keys.KEY)
+        memcached.client.set.assert_called_with(Keys.KEY, 1)
 
     @pytest.mark.asyncio
     async def test_raw_bytes(self, memcached):
-        await memcached._raw("set", pytest.KEY, "asd")
-        await memcached._raw("get", pytest.KEY, encoding=None)
-        memcached.client.get.assert_called_with(pytest.KEY)
-        memcached.client.set.assert_called_with(pytest.KEY, "asd")
+        await memcached._raw("set", Keys.KEY, "asd")
+        await memcached._raw("get", Keys.KEY, encoding=None)
+        memcached.client.get.assert_called_with(Keys.KEY)
+        memcached.client.set.assert_called_with(Keys.KEY, "asd")
 
     @pytest.mark.asyncio
     async def test_redlock_release(self, mocker, memcached):
         mocker.spy(memcached, "_delete")
-        await memcached._redlock_release(pytest.KEY, "random")
-        memcached._delete.assert_called_with(pytest.KEY)
+        await memcached._redlock_release(Keys.KEY, "random")
+        memcached._delete.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_close(self, memcached):
@@ -271,13 +272,13 @@ def test_parse_uri_path(self):
 
     @pytest.mark.parametrize(
         "namespace, expected",
-        ([None, "test" + pytest.KEY], ["", pytest.KEY], ["my_ns", "my_ns" + pytest.KEY]),  # type: ignore[attr-defined]  # noqa: B950
+        ([None, "test" + Keys.KEY], ["", Keys.KEY], ["my_ns", "my_ns" + Keys.KEY]),  # type: ignore[attr-defined]  # noqa: B950
     )
     def test_build_key_bytes(self, set_test_namespace, memcached_cache, namespace, expected):
-        assert memcached_cache.build_key(pytest.KEY, namespace=namespace) == expected.encode()
+        assert memcached_cache.build_key(Keys.KEY, namespace=namespace) == expected.encode()
 
     def test_build_key_no_namespace(self, memcached_cache):
-        assert memcached_cache.build_key(pytest.KEY, namespace=None) == pytest.KEY.encode()
+        assert memcached_cache.build_key(Keys.KEY, namespace=None) == Keys.KEY.encode()
 
     def test_build_key_no_spaces(self, memcached_cache):
         assert memcached_cache.build_key("hello world") == b"hello_world"
diff --git a/tests/ut/backends/test_memory.py b/tests/ut/backends/test_memory.py
index 537ca72d..8051df6e 100644
--- a/tests/ut/backends/test_memory.py
+++ b/tests/ut/backends/test_memory.py
@@ -2,6 +2,7 @@
 from unittest.mock import ANY, MagicMock, patch
 
 import pytest
+from tests.utils import Keys
 
 from aiocache.backends.memory import SimpleMemoryBackend, SimpleMemoryCache
 from aiocache.base import BaseCache
@@ -19,145 +20,145 @@ def memory(mocker):
 class TestSimpleMemoryBackend:
     @pytest.mark.asyncio
     async def test_get(self, memory):
-        await memory._get(pytest.KEY)
-        SimpleMemoryBackend._cache.get.assert_called_with(pytest.KEY)
+        await memory._get(Keys.KEY)
+        SimpleMemoryBackend._cache.get.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_gets(self, mocker, memory):
         mocker.spy(memory, "_get")
-        await memory._gets(pytest.KEY)
-        memory._get.assert_called_with(pytest.KEY, encoding="utf-8", _conn=ANY)
+        await memory._gets(Keys.KEY)
+        memory._get.assert_called_with(Keys.KEY, encoding="utf-8", _conn=ANY)
 
     @pytest.mark.asyncio
     async def test_set(self, memory):
-        await memory._set(pytest.KEY, "value")
-        SimpleMemoryBackend._cache.__setitem__.assert_called_with(pytest.KEY, "value")
+        await memory._set(Keys.KEY, "value")
+        SimpleMemoryBackend._cache.__setitem__.assert_called_with(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_set_no_ttl_no_handle(self, memory):
-        await memory._set(pytest.KEY, "value", ttl=0)
-        assert pytest.KEY not in memory._handlers
+        await memory._set(Keys.KEY, "value", ttl=0)
+        assert Keys.KEY not in memory._handlers
 
-        await memory._set(pytest.KEY, "value")
-        assert pytest.KEY not in memory._handlers
+        await memory._set(Keys.KEY, "value")
+        assert Keys.KEY not in memory._handlers
 
     @pytest.mark.asyncio
     async def test_set_cancel_previous_ttl_handle(self, memory, mocker):
         with patch("asyncio.get_event_loop"):
-            await memory._set(pytest.KEY, "value", ttl=0.1)
-            memory._handlers[pytest.KEY].cancel.assert_not_called()
+            await memory._set(Keys.KEY, "value", ttl=0.1)
+            memory._handlers[Keys.KEY].cancel.assert_not_called()
 
-            await memory._set(pytest.KEY, "new_value", ttl=0.1)
-            memory._handlers[pytest.KEY].cancel.assert_called_once_with()
+            await memory._set(Keys.KEY, "new_value", ttl=0.1)
+            memory._handlers[Keys.KEY].cancel.assert_called_once_with()
 
     @pytest.mark.asyncio
     async def test_set_ttl_handle(self, memory):
-        await memory._set(pytest.KEY, "value", ttl=100)
-        assert pytest.KEY in memory._handlers
-        assert isinstance(memory._handlers[pytest.KEY], asyncio.Handle)
+        await memory._set(Keys.KEY, "value", ttl=100)
+        assert Keys.KEY in memory._handlers
+        assert isinstance(memory._handlers[Keys.KEY], asyncio.Handle)
 
     @pytest.mark.asyncio
     async def test_set_cas_token(self, mocker, memory):
         memory._cache.get.return_value = "old_value"
-        assert await memory._set(pytest.KEY, "value", _cas_token="old_value") == 1
-        SimpleMemoryBackend._cache.__setitem__.assert_called_with(pytest.KEY, "value")
+        assert await memory._set(Keys.KEY, "value", _cas_token="old_value") == 1
+        SimpleMemoryBackend._cache.__setitem__.assert_called_with(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_set_cas_fail(self, mocker, memory):
         memory._cache.get.return_value = "value"
-        assert await memory._set(pytest.KEY, "value", _cas_token="old_value") == 0
+        assert await memory._set(Keys.KEY, "value", _cas_token="old_value") == 0
         assert SimpleMemoryBackend._cache.__setitem__.call_count == 0
 
     @pytest.mark.asyncio
     async def test_multi_get(self, memory):
-        await memory._multi_get([pytest.KEY, pytest.KEY_1])
-        SimpleMemoryBackend._cache.get.assert_any_call(pytest.KEY)
-        SimpleMemoryBackend._cache.get.assert_any_call(pytest.KEY_1)
+        await memory._multi_get([Keys.KEY, Keys.KEY_1])
+        SimpleMemoryBackend._cache.get.assert_any_call(Keys.KEY)
+        SimpleMemoryBackend._cache.get.assert_any_call(Keys.KEY_1)
 
     @pytest.mark.asyncio
     async def test_multi_set(self, memory):
-        await memory._multi_set([(pytest.KEY, "value"), (pytest.KEY_1, "random")])
-        SimpleMemoryBackend._cache.__setitem__.assert_any_call(pytest.KEY, "value")
-        SimpleMemoryBackend._cache.__setitem__.assert_any_call(pytest.KEY_1, "random")
+        await memory._multi_set([(Keys.KEY, "value"), (Keys.KEY_1, "random")])
+        SimpleMemoryBackend._cache.__setitem__.assert_any_call(Keys.KEY, "value")
+        SimpleMemoryBackend._cache.__setitem__.assert_any_call(Keys.KEY_1, "random")
 
     @pytest.mark.asyncio
     async def test_add(self, memory, mocker):
         mocker.spy(memory, "_set")
-        await memory._add(pytest.KEY, "value")
-        memory._set.assert_called_with(pytest.KEY, "value", ttl=None)
+        await memory._add(Keys.KEY, "value")
+        memory._set.assert_called_with(Keys.KEY, "value", ttl=None)
 
     @pytest.mark.asyncio
     async def test_add_existing(self, memory):
         SimpleMemoryBackend._cache.__contains__.return_value = True
         with pytest.raises(ValueError):
-            await memory._add(pytest.KEY, "value")
+            await memory._add(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_exists(self, memory):
-        await memory._exists(pytest.KEY)
-        SimpleMemoryBackend._cache.__contains__.assert_called_with(pytest.KEY)
+        await memory._exists(Keys.KEY)
+        SimpleMemoryBackend._cache.__contains__.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_increment(self, memory):
-        await memory._increment(pytest.KEY, 2)
-        SimpleMemoryBackend._cache.__contains__.assert_called_with(pytest.KEY)
-        SimpleMemoryBackend._cache.__setitem__.assert_called_with(pytest.KEY, 2)
+        await memory._increment(Keys.KEY, 2)
+        SimpleMemoryBackend._cache.__contains__.assert_called_with(Keys.KEY)
+        SimpleMemoryBackend._cache.__setitem__.assert_called_with(Keys.KEY, 2)
 
     @pytest.mark.asyncio
     async def test_increment_missing(self, memory):
         SimpleMemoryBackend._cache.__contains__.return_value = True
         SimpleMemoryBackend._cache.__getitem__.return_value = 2
-        await memory._increment(pytest.KEY, 2)
-        SimpleMemoryBackend._cache.__getitem__.assert_called_with(pytest.KEY)
-        SimpleMemoryBackend._cache.__setitem__.assert_called_with(pytest.KEY, 4)
+        await memory._increment(Keys.KEY, 2)
+        SimpleMemoryBackend._cache.__getitem__.assert_called_with(Keys.KEY)
+        SimpleMemoryBackend._cache.__setitem__.assert_called_with(Keys.KEY, 4)
 
     @pytest.mark.asyncio
     async def test_increment_typerror(self, memory):
         SimpleMemoryBackend._cache.__contains__.return_value = True
         SimpleMemoryBackend._cache.__getitem__.return_value = "asd"
         with pytest.raises(TypeError):
-            await memory._increment(pytest.KEY, 2)
+            await memory._increment(Keys.KEY, 2)
 
     @pytest.mark.asyncio
     async def test_expire_no_handle_no_ttl(self, memory):
         SimpleMemoryBackend._cache.__contains__.return_value = True
-        await memory._expire(pytest.KEY, 0)
-        assert memory._handlers.get(pytest.KEY) is None
+        await memory._expire(Keys.KEY, 0)
+        assert memory._handlers.get(Keys.KEY) is None
 
     @pytest.mark.asyncio
     async def test_expire_no_handle_ttl(self, memory):
         SimpleMemoryBackend._cache.__contains__.return_value = True
-        await memory._expire(pytest.KEY, 1)
-        assert isinstance(memory._handlers.get(pytest.KEY), asyncio.Handle)
+        await memory._expire(Keys.KEY, 1)
+        assert isinstance(memory._handlers.get(Keys.KEY), asyncio.Handle)
 
     @pytest.mark.asyncio
     async def test_expire_handle_ttl(self, memory):
         fake = MagicMock()
-        SimpleMemoryBackend._handlers[pytest.KEY] = fake
+        SimpleMemoryBackend._handlers[Keys.KEY] = fake
         SimpleMemoryBackend._cache.__contains__.return_value = True
-        await memory._expire(pytest.KEY, 1)
+        await memory._expire(Keys.KEY, 1)
         assert fake.cancel.call_count == 1
-        assert isinstance(memory._handlers.get(pytest.KEY), asyncio.Handle)
+        assert isinstance(memory._handlers.get(Keys.KEY), asyncio.Handle)
 
     @pytest.mark.asyncio
     async def test_expire_missing(self, memory):
         SimpleMemoryBackend._cache.__contains__.return_value = False
-        assert await memory._expire(pytest.KEY, 1) is False
+        assert await memory._expire(Keys.KEY, 1) is False
 
     @pytest.mark.asyncio
     async def test_delete(self, memory):
         fake = MagicMock()
-        SimpleMemoryBackend._handlers[pytest.KEY] = fake
-        await memory._delete(pytest.KEY)
+        SimpleMemoryBackend._handlers[Keys.KEY] = fake
+        await memory._delete(Keys.KEY)
         assert fake.cancel.call_count == 1
-        assert pytest.KEY not in SimpleMemoryBackend._handlers
-        SimpleMemoryBackend._cache.pop.assert_called_with(pytest.KEY, None)
+        assert Keys.KEY not in SimpleMemoryBackend._handlers
+        SimpleMemoryBackend._cache.pop.assert_called_with(Keys.KEY, None)
 
     @pytest.mark.asyncio
     async def test_delete_missing(self, memory):
         SimpleMemoryBackend._cache.pop.return_value = None
-        await memory._delete(pytest.KEY)
-        SimpleMemoryBackend._cache.pop.assert_called_with(pytest.KEY, None)
+        await memory._delete(Keys.KEY)
+        SimpleMemoryBackend._cache.pop.assert_called_with(Keys.KEY, None)
 
     @pytest.mark.asyncio
     async def test_delete_non_truthy(self, memory):
@@ -168,10 +169,10 @@ async def test_delete_non_truthy(self, memory):
             bool(non_truthy)
 
         SimpleMemoryBackend._cache.pop.return_value = non_truthy
-        await memory._delete(pytest.KEY)
+        await memory._delete(Keys.KEY)
 
         assert non_truthy.__bool__.call_count == 1
-        SimpleMemoryBackend._cache.pop.assert_called_with(pytest.KEY, None)
+        SimpleMemoryBackend._cache.pop.assert_called_with(Keys.KEY, None)
 
     @pytest.mark.asyncio
     async def test_clear_namespace(self, memory):
@@ -191,24 +192,24 @@ async def test_clear_no_namespace(self, memory):
 
     @pytest.mark.asyncio
     async def test_raw(self, memory):
-        await memory._raw("get", pytest.KEY)
-        SimpleMemoryBackend._cache.get.assert_called_with(pytest.KEY)
+        await memory._raw("get", Keys.KEY)
+        SimpleMemoryBackend._cache.get.assert_called_with(Keys.KEY)
 
-        await memory._set(pytest.KEY, "value")
-        SimpleMemoryBackend._cache.__setitem__.assert_called_with(pytest.KEY, "value")
+        await memory._set(Keys.KEY, "value")
+        SimpleMemoryBackend._cache.__setitem__.assert_called_with(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_redlock_release(self, memory):
         SimpleMemoryBackend._cache.get.return_value = "lock"
-        assert await memory._redlock_release(pytest.KEY, "lock") == 1
-        SimpleMemoryBackend._cache.get.assert_called_with(pytest.KEY)
-        SimpleMemoryBackend._cache.pop.assert_called_with(pytest.KEY)
+        assert await memory._redlock_release(Keys.KEY, "lock") == 1
+        SimpleMemoryBackend._cache.get.assert_called_with(Keys.KEY)
+        SimpleMemoryBackend._cache.pop.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_redlock_release_nokey(self, memory):
         SimpleMemoryBackend._cache.get.return_value = None
-        assert await memory._redlock_release(pytest.KEY, "lock") == 0
-        SimpleMemoryBackend._cache.get.assert_called_with(pytest.KEY)
+        assert await memory._redlock_release(Keys.KEY, "lock") == 0
+        SimpleMemoryBackend._cache.get.assert_called_with(Keys.KEY)
         assert SimpleMemoryBackend._cache.pop.call_count == 0
 
 
diff --git a/tests/ut/backends/test_redis.py b/tests/ut/backends/test_redis.py
index e36fdd73..79136af4 100644
--- a/tests/ut/backends/test_redis.py
+++ b/tests/ut/backends/test_redis.py
@@ -2,6 +2,7 @@
 
 import aioredis
 import pytest
+from tests.utils import Keys
 
 from aiocache.backends.redis import RedisBackend, RedisCache, conn
 from aiocache.base import BaseCache
@@ -132,39 +133,39 @@ async def test_get_pool_calls_create_pool(self, redis, create_pool):
 
     @pytest.mark.asyncio
     async def test_get(self, redis, redis_connection):
-        await redis._get(pytest.KEY)
-        redis_connection.get.assert_called_with(pytest.KEY, encoding="utf-8")
+        await redis._get(Keys.KEY)
+        redis_connection.get.assert_called_with(Keys.KEY, encoding="utf-8")
 
     @pytest.mark.asyncio
     async def test_gets(self, mocker, redis, redis_connection):
         mocker.spy(redis, "_get")
-        await redis._gets(pytest.KEY)
-        redis._get.assert_called_with(pytest.KEY, encoding="utf-8", _conn=ANY)
+        await redis._gets(Keys.KEY)
+        redis._get.assert_called_with(Keys.KEY, encoding="utf-8", _conn=ANY)
 
     @pytest.mark.asyncio
     async def test_set(self, redis, redis_connection):
-        await redis._set(pytest.KEY, "value")
-        redis_connection.set.assert_called_with(pytest.KEY, "value")
+        await redis._set(Keys.KEY, "value")
+        redis_connection.set.assert_called_with(Keys.KEY, "value")
 
-        await redis._set(pytest.KEY, "value", ttl=1)
-        redis_connection.setex.assert_called_with(pytest.KEY, 1, "value")
+        await redis._set(Keys.KEY, "value", ttl=1)
+        redis_connection.setex.assert_called_with(Keys.KEY, 1, "value")
 
     @pytest.mark.asyncio
     async def test_set_cas_token(self, mocker, redis, redis_connection):
         mocker.spy(redis, "_cas")
-        await redis._set(pytest.KEY, "value", _cas_token="old_value", _conn=redis_connection)
+        await redis._set(Keys.KEY, "value", _cas_token="old_value", _conn=redis_connection)
         redis._cas.assert_called_with(
-            pytest.KEY, "value", "old_value", ttl=None, _conn=redis_connection
+            Keys.KEY, "value", "old_value", ttl=None, _conn=redis_connection
         )
 
     @pytest.mark.asyncio
     async def test_cas(self, mocker, redis, redis_connection):
         mocker.spy(redis, "_raw")
-        await redis._cas(pytest.KEY, "value", "old_value", ttl=10, _conn=redis_connection)
+        await redis._cas(Keys.KEY, "value", "old_value", ttl=10, _conn=redis_connection)
         redis._raw.assert_called_with(
             "eval",
             redis.CAS_SCRIPT,
-            [pytest.KEY],
+            [Keys.KEY],
             ["value", "old_value", "EX", 10],
             _conn=redis_connection,
         )
@@ -172,84 +173,84 @@ async def test_cas(self, mocker, redis, redis_connection):
     @pytest.mark.asyncio
     async def test_cas_float_ttl(self, mocker, redis, redis_connection):
         mocker.spy(redis, "_raw")
-        await redis._cas(pytest.KEY, "value", "old_value", ttl=0.1, _conn=redis_connection)
+        await redis._cas(Keys.KEY, "value", "old_value", ttl=0.1, _conn=redis_connection)
         redis._raw.assert_called_with(
             "eval",
             redis.CAS_SCRIPT,
-            [pytest.KEY],
+            [Keys.KEY],
             ["value", "old_value", "PX", 100],
             _conn=redis_connection,
         )
 
     @pytest.mark.asyncio
     async def test_multi_get(self, redis, redis_connection):
-        await redis._multi_get([pytest.KEY, pytest.KEY_1])
-        redis_connection.mget.assert_called_with(pytest.KEY, pytest.KEY_1, encoding="utf-8")
+        await redis._multi_get([Keys.KEY, Keys.KEY_1])
+        redis_connection.mget.assert_called_with(Keys.KEY, Keys.KEY_1, encoding="utf-8")
 
     @pytest.mark.asyncio
     async def test_multi_set(self, redis, redis_connection):
-        await redis._multi_set([(pytest.KEY, "value"), (pytest.KEY_1, "random")])
-        redis_connection.mset.assert_called_with(pytest.KEY, "value", pytest.KEY_1, "random")
+        await redis._multi_set([(Keys.KEY, "value"), (Keys.KEY_1, "random")])
+        redis_connection.mset.assert_called_with(Keys.KEY, "value", Keys.KEY_1, "random")
 
     @pytest.mark.asyncio
     async def test_multi_set_with_ttl(self, redis, redis_connection):
-        await redis._multi_set([(pytest.KEY, "value"), (pytest.KEY_1, "random")], ttl=1)
+        await redis._multi_set([(Keys.KEY, "value"), (Keys.KEY_1, "random")], ttl=1)
         assert redis_connection.multi_exec.call_count == 1
-        redis_connection.mset.assert_called_with(pytest.KEY, "value", pytest.KEY_1, "random")
-        redis_connection.expire.assert_any_call(pytest.KEY, timeout=1)
-        redis_connection.expire.assert_any_call(pytest.KEY_1, timeout=1)
+        redis_connection.mset.assert_called_with(Keys.KEY, "value", Keys.KEY_1, "random")
+        redis_connection.expire.assert_any_call(Keys.KEY, timeout=1)
+        redis_connection.expire.assert_any_call(Keys.KEY_1, timeout=1)
         assert redis_connection.execute.call_count == 1
 
     @pytest.mark.asyncio
     async def test_add(self, redis, redis_connection):
-        await redis._add(pytest.KEY, "value")
-        redis_connection.set.assert_called_with(pytest.KEY, "value", exist=ANY, expire=None)
+        await redis._add(Keys.KEY, "value")
+        redis_connection.set.assert_called_with(Keys.KEY, "value", exist=ANY, expire=None)
 
-        await redis._add(pytest.KEY, "value", 1)
-        redis_connection.set.assert_called_with(pytest.KEY, "value", exist=ANY, expire=1)
+        await redis._add(Keys.KEY, "value", 1)
+        redis_connection.set.assert_called_with(Keys.KEY, "value", exist=ANY, expire=1)
 
     @pytest.mark.asyncio
     async def test_add_existing(self, redis, redis_connection):
         redis_connection.set.return_value = False
         with pytest.raises(ValueError):
-            await redis._add(pytest.KEY, "value")
+            await redis._add(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_add_float_ttl(self, redis, redis_connection):
-        await redis._add(pytest.KEY, "value", 0.1)
-        redis_connection.set.assert_called_with(pytest.KEY, "value", exist=ANY, pexpire=100)
+        await redis._add(Keys.KEY, "value", 0.1)
+        redis_connection.set.assert_called_with(Keys.KEY, "value", exist=ANY, pexpire=100)
 
     @pytest.mark.asyncio
     async def test_exists(self, redis, redis_connection):
         redis_connection.exists.return_value = 1
-        await redis._exists(pytest.KEY)
-        redis_connection.exists.assert_called_with(pytest.KEY)
+        await redis._exists(Keys.KEY)
+        redis_connection.exists.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_expire(self, redis, redis_connection):
-        await redis._expire(pytest.KEY, ttl=1)
-        redis_connection.expire.assert_called_with(pytest.KEY, 1)
+        await redis._expire(Keys.KEY, ttl=1)
+        redis_connection.expire.assert_called_with(Keys.KEY, 1)
 
     @pytest.mark.asyncio
     async def test_increment(self, redis, redis_connection):
-        await redis._increment(pytest.KEY, delta=2)
-        redis_connection.incrby.assert_called_with(pytest.KEY, 2)
+        await redis._increment(Keys.KEY, delta=2)
+        redis_connection.incrby.assert_called_with(Keys.KEY, 2)
 
     @pytest.mark.asyncio
     async def test_increment_typerror(self, redis, redis_connection):
         redis_connection.incrby.side_effect = aioredis.errors.ReplyError("msg")
         with pytest.raises(TypeError):
-            await redis._increment(pytest.KEY, 2)
+            await redis._increment(Keys.KEY, 2)
 
     @pytest.mark.asyncio
     async def test_expire_0_ttl(self, redis, redis_connection):
-        await redis._expire(pytest.KEY, ttl=0)
-        redis_connection.persist.assert_called_with(pytest.KEY)
+        await redis._expire(Keys.KEY, ttl=0)
+        redis_connection.persist.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_delete(self, redis, redis_connection):
-        await redis._delete(pytest.KEY)
-        redis_connection.delete.assert_called_with(pytest.KEY)
+        await redis._delete(Keys.KEY)
+        redis_connection.delete.assert_called_with(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_clear(self, redis, redis_connection):
@@ -270,20 +271,20 @@ async def test_clear_no_namespace(self, redis, redis_connection):
 
     @pytest.mark.asyncio
     async def test_raw(self, redis, redis_connection):
-        await redis._raw("get", pytest.KEY)
-        await redis._raw("set", pytest.KEY, 1)
-        redis_connection.get.assert_called_with(pytest.KEY, encoding=ANY)
-        redis_connection.set.assert_called_with(pytest.KEY, 1)
+        await redis._raw("get", Keys.KEY)
+        await redis._raw("set", Keys.KEY, 1)
+        redis_connection.get.assert_called_with(Keys.KEY, encoding=ANY)
+        redis_connection.set.assert_called_with(Keys.KEY, 1)
 
     @pytest.mark.asyncio
     async def test_redlock_release(self, mocker, redis):
         mocker.spy(redis, "_raw")
-        await redis._redlock_release(pytest.KEY, "random")
-        redis._raw.assert_called_with("eval", redis.RELEASE_SCRIPT, [pytest.KEY], ["random"])
+        await redis._redlock_release(Keys.KEY, "random")
+        redis._raw.assert_called_with("eval", redis.RELEASE_SCRIPT, [Keys.KEY], ["random"])
 
     @pytest.mark.asyncio
     async def test_close_when_connected(self, redis):
-        await redis._raw("set", pytest.KEY, 1)
+        await redis._raw("set", Keys.KEY, 1)
         await redis._close()
         assert redis._pool.clear.call_count == 1
 
@@ -339,10 +340,10 @@ def test_parse_uri_path(self, path, expected):
 
     @pytest.mark.parametrize(
         "namespace, expected",
-        ([None, "test:" + pytest.KEY], ["", pytest.KEY], ["my_ns", "my_ns:" + pytest.KEY]),
+        ([None, "test:" + Keys.KEY], ["", Keys.KEY], ["my_ns", "my_ns:" + Keys.KEY]),
     )
     def test_build_key_double_dot(self, set_test_namespace, redis_cache, namespace, expected):
-        assert redis_cache.build_key(pytest.KEY, namespace=namespace) == expected
+        assert redis_cache.build_key(Keys.KEY, namespace=namespace) == expected
 
     def test_build_key_no_namespace(self, redis_cache):
-        assert redis_cache.build_key(pytest.KEY, namespace=None) == pytest.KEY
+        assert redis_cache.build_key(Keys.KEY, namespace=None) == Keys.KEY
diff --git a/tests/ut/conftest.py b/tests/ut/conftest.py
index 8c12c810..e10d947c 100644
--- a/tests/ut/conftest.py
+++ b/tests/ut/conftest.py
@@ -19,16 +19,6 @@
 from aiocache.serializers import BaseSerializer
 
 
-def pytest_configure():
-    """
-    Before pytest_namespace was being used to set the keys for
-    testing but the feature was removed
-    https://docs.pytest.org/en/latest/deprecations.html#pytest-namespace
-    """
-    pytest.KEY = "key"
-    pytest.KEY_1 = "random"
-
-
 @pytest.fixture(autouse=True)
 def reset_caches():
     caches.set_config(
diff --git a/tests/ut/test_base.py b/tests/ut/test_base.py
index 78249134..af0c72e0 100644
--- a/tests/ut/test_base.py
+++ b/tests/ut/test_base.py
@@ -3,6 +3,7 @@
 from unittest.mock import ANY, AsyncMock, MagicMock, patch
 
 import pytest
+from tests.utils import Keys
 
 from aiocache.base import API, BaseCache, _Conn
 
@@ -155,47 +156,47 @@ def test_str_timeout(self):
     @pytest.mark.asyncio
     async def test_add(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._add(pytest.KEY, "value", 0)
+            await base_cache._add(Keys.KEY, "value", 0)
 
     @pytest.mark.asyncio
     async def test_get(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._get(pytest.KEY, "utf-8")
+            await base_cache._get(Keys.KEY, "utf-8")
 
     @pytest.mark.asyncio
     async def test_set(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._set(pytest.KEY, "value", 0)
+            await base_cache._set(Keys.KEY, "value", 0)
 
     @pytest.mark.asyncio
     async def test_multi_get(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._multi_get([pytest.KEY], encoding="utf-8")
+            await base_cache._multi_get([Keys.KEY], encoding="utf-8")
 
     @pytest.mark.asyncio
     async def test_multi_set(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._multi_set([(pytest.KEY, "value")], 0)
+            await base_cache._multi_set([(Keys.KEY, "value")], 0)
 
     @pytest.mark.asyncio
     async def test_delete(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._delete(pytest.KEY)
+            await base_cache._delete(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_exists(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._exists(pytest.KEY)
+            await base_cache._exists(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_increment(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._increment(pytest.KEY, 2)
+            await base_cache._increment(Keys.KEY, 2)
 
     @pytest.mark.asyncio
     async def test_expire(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._expire(pytest.KEY, 0)
+            await base_cache._expire(Keys.KEY, 0)
 
     @pytest.mark.asyncio
     async def test_clear(self, base_cache):
@@ -205,7 +206,7 @@ async def test_clear(self, base_cache):
     @pytest.mark.asyncio
     async def test_raw(self, base_cache):
         with pytest.raises(NotImplementedError):
-            await base_cache._raw("get", pytest.KEY)
+            await base_cache._raw("get", Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_close(self, base_cache):
@@ -227,58 +228,58 @@ def set_test_namespace(self, base_cache):
 
     @pytest.mark.parametrize(
         "namespace, expected",
-        ([None, "test" + pytest.KEY], ["", pytest.KEY], ["my_ns", "my_ns" + pytest.KEY]),  # type: ignore[attr-defined]  # noqa: B950
+        ([None, "test" + Keys.KEY], ["", Keys.KEY], ["my_ns", "my_ns" + Keys.KEY]),  # type: ignore[attr-defined]  # noqa: B950
     )
     def test_build_key(self, set_test_namespace, base_cache, namespace, expected):
-        assert base_cache.build_key(pytest.KEY, namespace=namespace) == expected
+        assert base_cache.build_key(Keys.KEY, namespace=namespace) == expected
 
     def test_alt_build_key(self):
         cache = BaseCache(key_builder=lambda key, namespace: "x")
-        assert cache.build_key(pytest.KEY, "namespace") == "x"
+        assert cache.build_key(Keys.KEY, "namespace") == "x"
 
     @pytest.mark.asyncio
     async def test_add_ttl_cache_default(self, base_cache):
         base_cache._add = AsyncMock()
 
-        await base_cache.add(pytest.KEY, "value")
+        await base_cache.add(Keys.KEY, "value")
 
-        base_cache._add.assert_called_once_with(pytest.KEY, "value", _conn=None, ttl=None)
+        base_cache._add.assert_called_once_with(Keys.KEY, "value", _conn=None, ttl=None)
 
     @pytest.mark.asyncio
     async def test_add_ttl_default(self, base_cache):
         base_cache.ttl = 10
         base_cache._add = AsyncMock()
 
-        await base_cache.add(pytest.KEY, "value")
+        await base_cache.add(Keys.KEY, "value")
 
-        base_cache._add.assert_called_once_with(pytest.KEY, "value", _conn=None, ttl=10)
+        base_cache._add.assert_called_once_with(Keys.KEY, "value", _conn=None, ttl=10)
 
     @pytest.mark.asyncio
     async def test_add_ttl_overriden(self, base_cache):
         base_cache.ttl = 10
         base_cache._add = AsyncMock()
 
-        await base_cache.add(pytest.KEY, "value", ttl=20)
+        await base_cache.add(Keys.KEY, "value", ttl=20)
 
-        base_cache._add.assert_called_once_with(pytest.KEY, "value", _conn=None, ttl=20)
+        base_cache._add.assert_called_once_with(Keys.KEY, "value", _conn=None, ttl=20)
 
     @pytest.mark.asyncio
     async def test_add_ttl_none(self, base_cache):
         base_cache.ttl = 10
         base_cache._add = AsyncMock()
 
-        await base_cache.add(pytest.KEY, "value", ttl=None)
+        await base_cache.add(Keys.KEY, "value", ttl=None)
 
-        base_cache._add.assert_called_once_with(pytest.KEY, "value", _conn=None, ttl=None)
+        base_cache._add.assert_called_once_with(Keys.KEY, "value", _conn=None, ttl=None)
 
     @pytest.mark.asyncio
     async def test_set_ttl_cache_default(self, base_cache):
         base_cache._set = AsyncMock()
 
-        await base_cache.set(pytest.KEY, "value")
+        await base_cache.set(Keys.KEY, "value")
 
         base_cache._set.assert_called_once_with(
-            pytest.KEY, "value", _cas_token=None, _conn=None, ttl=None
+            Keys.KEY, "value", _cas_token=None, _conn=None, ttl=None
         )
 
     @pytest.mark.asyncio
@@ -286,10 +287,10 @@ async def test_set_ttl_default(self, base_cache):
         base_cache.ttl = 10
         base_cache._set = AsyncMock()
 
-        await base_cache.set(pytest.KEY, "value")
+        await base_cache.set(Keys.KEY, "value")
 
         base_cache._set.assert_called_once_with(
-            pytest.KEY, "value", _cas_token=None, _conn=None, ttl=10
+            Keys.KEY, "value", _cas_token=None, _conn=None, ttl=10
         )
 
     @pytest.mark.asyncio
@@ -297,10 +298,10 @@ async def test_set_ttl_overriden(self, base_cache):
         base_cache.ttl = 10
         base_cache._set = AsyncMock()
 
-        await base_cache.set(pytest.KEY, "value", ttl=20)
+        await base_cache.set(Keys.KEY, "value", ttl=20)
 
         base_cache._set.assert_called_once_with(
-            pytest.KEY, "value", _cas_token=None, _conn=None, ttl=20
+            Keys.KEY, "value", _cas_token=None, _conn=None, ttl=20
         )
 
     @pytest.mark.asyncio
@@ -308,20 +309,20 @@ async def test_set_ttl_none(self, base_cache):
         base_cache.ttl = 10
         base_cache._set = AsyncMock()
 
-        await base_cache.set(pytest.KEY, "value", ttl=None)
+        await base_cache.set(Keys.KEY, "value", ttl=None)
 
         base_cache._set.assert_called_once_with(
-            pytest.KEY, "value", _cas_token=None, _conn=None, ttl=None
+            Keys.KEY, "value", _cas_token=None, _conn=None, ttl=None
         )
 
     @pytest.mark.asyncio
     async def test_multi_set_ttl_cache_default(self, base_cache):
         base_cache._multi_set = AsyncMock()
 
-        await base_cache.multi_set([[pytest.KEY, "value"], [pytest.KEY_1, "value1"]])
+        await base_cache.multi_set([[Keys.KEY, "value"], [Keys.KEY_1, "value1"]])
 
         base_cache._multi_set.assert_called_once_with(
-            [(pytest.KEY, "value"), (pytest.KEY_1, "value1")], _conn=None, ttl=None
+            [(Keys.KEY, "value"), (Keys.KEY_1, "value1")], _conn=None, ttl=None
         )
 
     @pytest.mark.asyncio
@@ -329,10 +330,10 @@ async def test_multi_set_ttl_default(self, base_cache):
         base_cache.ttl = 10
         base_cache._multi_set = AsyncMock()
 
-        await base_cache.multi_set([[pytest.KEY, "value"], [pytest.KEY_1, "value1"]])
+        await base_cache.multi_set([[Keys.KEY, "value"], [Keys.KEY_1, "value1"]])
 
         base_cache._multi_set.assert_called_once_with(
-            [(pytest.KEY, "value"), (pytest.KEY_1, "value1")], _conn=None, ttl=10
+            [(Keys.KEY, "value"), (Keys.KEY_1, "value1")], _conn=None, ttl=10
         )
 
     @pytest.mark.asyncio
@@ -340,10 +341,10 @@ async def test_multi_set_ttl_overriden(self, base_cache):
         base_cache.ttl = 10
         base_cache._multi_set = AsyncMock()
 
-        await base_cache.multi_set([[pytest.KEY, "value"], [pytest.KEY_1, "value1"]], ttl=20)
+        await base_cache.multi_set([[Keys.KEY, "value"], [Keys.KEY_1, "value1"]], ttl=20)
 
         base_cache._multi_set.assert_called_once_with(
-            [(pytest.KEY, "value"), (pytest.KEY_1, "value1")], _conn=None, ttl=20
+            [(Keys.KEY, "value"), (Keys.KEY_1, "value1")], _conn=None, ttl=20
         )
 
     @pytest.mark.asyncio
@@ -351,10 +352,10 @@ async def test_multi_set_ttl_none(self, base_cache):
         base_cache.ttl = 10
         base_cache._multi_set = AsyncMock()
 
-        await base_cache.multi_set([[pytest.KEY, "value"], [pytest.KEY_1, "value1"]], ttl=None)
+        await base_cache.multi_set([[Keys.KEY, "value"], [Keys.KEY_1, "value1"]], ttl=None)
 
         base_cache._multi_set.assert_called_once_with(
-            [(pytest.KEY, "value"), (pytest.KEY_1, "value1")], _conn=None, ttl=None
+            [(Keys.KEY, "value"), (Keys.KEY_1, "value1")], _conn=None, ttl=None
         )
 
 
@@ -373,10 +374,10 @@ async def asleep(self, *args, **kwargs):
 
     @pytest.mark.asyncio
     async def test_get(self, mock_cache):
-        await mock_cache.get(pytest.KEY)
+        await mock_cache.get(Keys.KEY)
 
         mock_cache._get.assert_called_with(
-            mock_cache._build_key(pytest.KEY), encoding=ANY, _conn=ANY
+            mock_cache._build_key(Keys.KEY), encoding=ANY, _conn=ANY
         )
         assert mock_cache.plugins[0].pre_get.call_count == 1
         assert mock_cache.plugins[0].post_get.call_count == 1
@@ -386,26 +387,26 @@ async def test_get_timeouts(self, mock_cache):
         mock_cache._get = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.get(pytest.KEY)
+            await mock_cache.get(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_get_default(self, mock_cache):
         mock_cache._serializer.loads.return_value = None
 
-        assert await mock_cache.get(pytest.KEY, default=1) == 1
+        assert await mock_cache.get(Keys.KEY, default=1) == 1
 
     @pytest.mark.asyncio
     async def test_get_negative_default(self, mock_cache):
         mock_cache._serializer.loads.return_value = False
 
-        assert await mock_cache.get(pytest.KEY) is False
+        assert await mock_cache.get(Keys.KEY) is False
 
     @pytest.mark.asyncio
     async def test_set(self, mock_cache):
-        await mock_cache.set(pytest.KEY, "value", ttl=2)
+        await mock_cache.set(Keys.KEY, "value", ttl=2)
 
         mock_cache._set.assert_called_with(
-            mock_cache._build_key(pytest.KEY), ANY, ttl=2, _cas_token=None, _conn=ANY
+            mock_cache._build_key(Keys.KEY), ANY, ttl=2, _cas_token=None, _conn=ANY
         )
         assert mock_cache.plugins[0].pre_set.call_count == 1
         assert mock_cache.plugins[0].post_set.call_count == 1
@@ -415,14 +416,14 @@ async def test_set_timeouts(self, mock_cache):
         mock_cache._set = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.set(pytest.KEY, "value")
+            await mock_cache.set(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_add(self, mock_cache):
         mock_cache._exists = AsyncMock(return_value=False)
-        await mock_cache.add(pytest.KEY, "value", ttl=2)
+        await mock_cache.add(Keys.KEY, "value", ttl=2)
 
-        key = mock_cache._build_key(pytest.KEY)
+        key = mock_cache._build_key(Keys.KEY)
         mock_cache._add.assert_called_with(key, ANY, ttl=2, _conn=ANY)
         assert mock_cache.plugins[0].pre_add.call_count == 1
         assert mock_cache.plugins[0].post_add.call_count == 1
@@ -432,14 +433,14 @@ async def test_add_timeouts(self, mock_cache):
         mock_cache._add = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.add(pytest.KEY, "value")
+            await mock_cache.add(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_mget(self, mock_cache):
-        await mock_cache.multi_get([pytest.KEY, pytest.KEY_1])
+        await mock_cache.multi_get([Keys.KEY, Keys.KEY_1])
 
         mock_cache._multi_get.assert_called_with(
-            [mock_cache._build_key(pytest.KEY), mock_cache._build_key(pytest.KEY_1)],
+            [mock_cache._build_key(Keys.KEY), mock_cache._build_key(Keys.KEY_1)],
             encoding=ANY,
             _conn=ANY,
         )
@@ -451,14 +452,14 @@ async def test_mget_timeouts(self, mock_cache):
         mock_cache._multi_get = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.multi_get(pytest.KEY, "value")
+            await mock_cache.multi_get(Keys.KEY, "value")
 
     @pytest.mark.asyncio
     async def test_mset(self, mock_cache):
-        await mock_cache.multi_set([[pytest.KEY, "value"], [pytest.KEY_1, "value1"]], ttl=2)
+        await mock_cache.multi_set([[Keys.KEY, "value"], [Keys.KEY_1, "value1"]], ttl=2)
 
         mock_cache._multi_set.assert_called_with(
-            [(mock_cache._build_key(pytest.KEY), ANY), (mock_cache._build_key(pytest.KEY_1), ANY)],
+            [(mock_cache._build_key(Keys.KEY), ANY), (mock_cache._build_key(Keys.KEY_1), ANY)],
             ttl=2,
             _conn=ANY,
         )
@@ -470,13 +471,13 @@ async def test_mset_timeouts(self, mock_cache):
         mock_cache._multi_set = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.multi_set([[pytest.KEY, "value"], [pytest.KEY_1, "value1"]])
+            await mock_cache.multi_set([[Keys.KEY, "value"], [Keys.KEY_1, "value1"]])
 
     @pytest.mark.asyncio
     async def test_exists(self, mock_cache):
-        await mock_cache.exists(pytest.KEY)
+        await mock_cache.exists(Keys.KEY)
 
-        mock_cache._exists.assert_called_with(mock_cache._build_key(pytest.KEY), _conn=ANY)
+        mock_cache._exists.assert_called_with(mock_cache._build_key(Keys.KEY), _conn=ANY)
         assert mock_cache.plugins[0].pre_exists.call_count == 1
         assert mock_cache.plugins[0].post_exists.call_count == 1
 
@@ -485,13 +486,13 @@ async def test_exists_timeouts(self, mock_cache):
         mock_cache._exists = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.exists(pytest.KEY)
+            await mock_cache.exists(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_increment(self, mock_cache):
-        await mock_cache.increment(pytest.KEY, 2)
+        await mock_cache.increment(Keys.KEY, 2)
 
-        mock_cache._increment.assert_called_with(mock_cache._build_key(pytest.KEY), 2, _conn=ANY)
+        mock_cache._increment.assert_called_with(mock_cache._build_key(Keys.KEY), 2, _conn=ANY)
         assert mock_cache.plugins[0].pre_increment.call_count == 1
         assert mock_cache.plugins[0].post_increment.call_count == 1
 
@@ -500,13 +501,13 @@ async def test_increment_timeouts(self, mock_cache):
         mock_cache._increment = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.increment(pytest.KEY)
+            await mock_cache.increment(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_delete(self, mock_cache):
-        await mock_cache.delete(pytest.KEY)
+        await mock_cache.delete(Keys.KEY)
 
-        mock_cache._delete.assert_called_with(mock_cache._build_key(pytest.KEY), _conn=ANY)
+        mock_cache._delete.assert_called_with(mock_cache._build_key(Keys.KEY), _conn=ANY)
         assert mock_cache.plugins[0].pre_delete.call_count == 1
         assert mock_cache.plugins[0].post_delete.call_count == 1
 
@@ -515,12 +516,12 @@ async def test_delete_timeouts(self, mock_cache):
         mock_cache._delete = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.delete(pytest.KEY)
+            await mock_cache.delete(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_expire(self, mock_cache):
-        await mock_cache.expire(pytest.KEY, 1)
-        mock_cache._expire.assert_called_with(mock_cache._build_key(pytest.KEY), 1, _conn=ANY)
+        await mock_cache.expire(Keys.KEY, 1)
+        mock_cache._expire.assert_called_with(mock_cache._build_key(Keys.KEY), 1, _conn=ANY)
         assert mock_cache.plugins[0].pre_expire.call_count == 1
         assert mock_cache.plugins[0].post_expire.call_count == 1
 
@@ -529,12 +530,12 @@ async def test_expire_timeouts(self, mock_cache):
         mock_cache._expire = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.expire(pytest.KEY, 0)
+            await mock_cache.expire(Keys.KEY, 0)
 
     @pytest.mark.asyncio
     async def test_clear(self, mock_cache):
-        await mock_cache.clear(pytest.KEY)
-        mock_cache._clear.assert_called_with(mock_cache._build_key(pytest.KEY), _conn=ANY)
+        await mock_cache.clear(Keys.KEY)
+        mock_cache._clear.assert_called_with(mock_cache._build_key(Keys.KEY), _conn=ANY)
         assert mock_cache.plugins[0].pre_clear.call_count == 1
         assert mock_cache.plugins[0].post_clear.call_count == 1
 
@@ -543,13 +544,13 @@ async def test_clear_timeouts(self, mock_cache):
         mock_cache._clear = self.asleep
 
         with pytest.raises(asyncio.TimeoutError):
-            await mock_cache.clear(pytest.KEY)
+            await mock_cache.clear(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_raw(self, mock_cache):
-        await mock_cache.raw("get", pytest.KEY)
+        await mock_cache.raw("get", Keys.KEY)
         mock_cache._raw.assert_called_with(
-            "get", mock_cache._build_key(pytest.KEY), encoding=ANY, _conn=ANY
+            "get", mock_cache._build_key(Keys.KEY), encoding=ANY, _conn=ANY
         )
         assert mock_cache.plugins[0].pre_raw.call_count == 1
         assert mock_cache.plugins[0].post_raw.call_count == 1
diff --git a/tests/ut/test_lock.py b/tests/ut/test_lock.py
index 8c3cc0a8..9b4ff64b 100644
--- a/tests/ut/test_lock.py
+++ b/tests/ut/test_lock.py
@@ -2,6 +2,7 @@
 from unittest.mock import Mock, patch
 
 import pytest
+from tests.utils import Keys
 
 from aiocache.lock import OptimisticLock, OptimisticLockError, RedLock
 
@@ -10,35 +11,35 @@ class TestRedLock:
     @pytest.fixture
     def lock(self, mock_cache):
         RedLock._EVENTS = {}
-        yield RedLock(mock_cache, pytest.KEY, 20)
+        yield RedLock(mock_cache, Keys.KEY, 20)
 
     @pytest.mark.asyncio
     async def test_acquire(self, mock_cache, lock):
         await lock._acquire()
-        mock_cache._add.assert_called_with(pytest.KEY + "-lock", lock._value, ttl=20)
-        assert lock._EVENTS[pytest.KEY + "-lock"].is_set() is False
+        mock_cache._add.assert_called_with(Keys.KEY_LOCK, lock._value, ttl=20)
+        assert lock._EVENTS[Keys.KEY_LOCK].is_set() is False
 
     @pytest.mark.asyncio
     async def test_release(self, mock_cache, lock):
         mock_cache._redlock_release.return_value = True
         await lock._acquire()
         await lock._release()
-        mock_cache._redlock_release.assert_called_with(pytest.KEY + "-lock", lock._value)
-        assert pytest.KEY + "-lock" not in lock._EVENTS
+        mock_cache._redlock_release.assert_called_with(Keys.KEY_LOCK, lock._value)
+        assert Keys.KEY_LOCK not in lock._EVENTS
 
     @pytest.mark.asyncio
     async def test_release_no_acquire(self, mock_cache, lock):
         mock_cache._redlock_release.return_value = False
-        assert pytest.KEY + "-lock" not in lock._EVENTS
+        assert Keys.KEY_LOCK not in lock._EVENTS
         await lock._release()
-        assert pytest.KEY + "-lock" not in lock._EVENTS
+        assert Keys.KEY_LOCK not in lock._EVENTS
 
     @pytest.mark.asyncio
     async def test_context_manager(self, mock_cache, lock):
         async with lock:
             pass
-        mock_cache._add.assert_called_with(pytest.KEY + "-lock", lock._value, ttl=20)
-        mock_cache._redlock_release.assert_called_with(pytest.KEY + "-lock", lock._value)
+        mock_cache._add.assert_called_with(Keys.KEY_LOCK, lock._value, ttl=20)
+        mock_cache._redlock_release.assert_called_with(Keys.KEY_LOCK, lock._value)
 
     @pytest.mark.asyncio
     async def test_raises_exceptions(self, mock_cache, lock):
@@ -64,35 +65,35 @@ async def test_wait_for_release_no_acquire(self, mock_cache, lock):
 
     @pytest.mark.asyncio
     async def test_multiple_locks_lock(self, mock_cache, lock):
-        lock_1 = RedLock(mock_cache, pytest.KEY, 20)
-        lock_2 = RedLock(mock_cache, pytest.KEY, 20)
+        lock_1 = RedLock(mock_cache, Keys.KEY, 20)
+        lock_2 = RedLock(mock_cache, Keys.KEY, 20)
         mock_cache._add.side_effect = [True, ValueError(), ValueError()]
         await lock._acquire()
-        event = lock._EVENTS[pytest.KEY + "-lock"]
+        event = lock._EVENTS[Keys.KEY_LOCK]
 
-        assert pytest.KEY + "-lock" in lock._EVENTS
-        assert pytest.KEY + "-lock" in lock_1._EVENTS
-        assert pytest.KEY + "-lock" in lock_2._EVENTS
+        assert Keys.KEY_LOCK in lock._EVENTS
+        assert Keys.KEY_LOCK in lock_1._EVENTS
+        assert Keys.KEY_LOCK in lock_2._EVENTS
         assert not event.is_set()
 
         await asyncio.gather(lock_1._acquire(), lock._release(), lock_2._acquire())
 
-        assert pytest.KEY + "-lock" not in lock._EVENTS
-        assert pytest.KEY + "-lock" not in lock_1._EVENTS
-        assert pytest.KEY + "-lock" not in lock_2._EVENTS
+        assert Keys.KEY_LOCK not in lock._EVENTS
+        assert Keys.KEY_LOCK not in lock_1._EVENTS
+        assert Keys.KEY_LOCK not in lock_2._EVENTS
         assert event.is_set()
 
 
 class TestOptimisticLock:
     @pytest.fixture
     def lock(self, mock_cache):
-        yield OptimisticLock(mock_cache, pytest.KEY)
+        yield OptimisticLock(mock_cache, Keys.KEY)
 
     def test_init(self, mock_cache, lock):
         assert lock.client == mock_cache
         assert lock._token is None
-        assert lock.key == pytest.KEY
-        assert lock.ns_key == mock_cache._build_key(pytest.KEY)
+        assert lock.key == Keys.KEY
+        assert lock.ns_key == mock_cache._build_key(Keys.KEY)
 
     @pytest.mark.asyncio
     async def test_aenter_returns_lock(self, lock):
@@ -106,14 +107,14 @@ async def test_aexit_not_crashing(self, lock):
     @pytest.mark.asyncio
     async def test_acquire_calls_get(self, lock):
         await lock._acquire()
-        lock.client._gets.assert_called_with(pytest.KEY)
+        lock.client._gets.assert_called_with(Keys.KEY)
         assert lock._token == lock.client._gets.return_value
 
     @pytest.mark.asyncio
     async def test_cas_calls_set_with_token(self, lock):
         await lock._acquire()
         await lock.cas("value")
-        lock.client.set.assert_called_with(pytest.KEY, "value", _cas_token=lock._token)
+        lock.client.set.assert_called_with(Keys.KEY, "value", _cas_token=lock._token)
 
     @pytest.mark.asyncio
     async def test_wrong_token_raises_error(self, mock_cache, lock):
diff --git a/tests/ut/test_plugins.py b/tests/ut/test_plugins.py
index 5883d905..814b638c 100644
--- a/tests/ut/test_plugins.py
+++ b/tests/ut/test_plugins.py
@@ -1,6 +1,7 @@
 from unittest.mock import MagicMock
 
 import pytest
+from tests.utils import Keys
 
 from aiocache.base import API, BaseCache
 from aiocache.plugins import BasePlugin, HitMissRatioPlugin, TimingPlugin
@@ -57,13 +58,13 @@ def plugin(self):
     @pytest.mark.asyncio
     async def test_post_get(self, plugin):
         client = MagicMock(spec=BaseCache)
-        await plugin.post_get(client, pytest.KEY)
+        await plugin.post_get(client, Keys.KEY)
 
         assert client.hit_miss_ratio["hits"] == 0
         assert client.hit_miss_ratio["total"] == 1
         assert client.hit_miss_ratio["hit_ratio"] == 0
 
-        await plugin.post_get(client, pytest.KEY, ret="value")
+        await plugin.post_get(client, Keys.KEY, ret="value")
         assert client.hit_miss_ratio["hits"] == 1
         assert client.hit_miss_ratio["total"] == 2
         assert client.hit_miss_ratio["hit_ratio"] == 0.5
@@ -71,13 +72,13 @@ async def test_post_get(self, plugin):
     @pytest.mark.asyncio
     async def test_post_multi_get(self, plugin):
         client = MagicMock(spec=BaseCache)
-        await plugin.post_multi_get(client, [pytest.KEY, pytest.KEY_1], ret=[None, None])
+        await plugin.post_multi_get(client, [Keys.KEY, Keys.KEY_1], ret=[None, None])
 
         assert client.hit_miss_ratio["hits"] == 0
         assert client.hit_miss_ratio["total"] == 2
         assert client.hit_miss_ratio["hit_ratio"] == 0
 
-        await plugin.post_multi_get(client, [pytest.KEY, pytest.KEY_1], ret=["value", "random"])
+        await plugin.post_multi_get(client, [Keys.KEY, Keys.KEY_1], ret=["value", "random"])
         assert client.hit_miss_ratio["hits"] == 2
         assert client.hit_miss_ratio["total"] == 4
         assert client.hit_miss_ratio["hit_ratio"] == 0.5
diff --git a/tests/utils.py b/tests/utils.py
new file mode 100644
index 00000000..c62f77ba
--- /dev/null
+++ b/tests/utils.py
@@ -0,0 +1,7 @@
+from enum import Enum
+
+
+class Keys(str, Enum):
+    KEY: str = "key"
+    KEY_1: str = "random"
+    KEY_LOCK: str = "key-lock"