diff --git a/core/cluster.py b/core/cluster.py
index 61f7f52..207d820 100644
--- a/core/cluster.py
+++ b/core/cluster.py
@@ -3,11 +3,12 @@
 import datetime
 import hmac
 import io
+import tempfile
 import json
 from pathlib import Path
 import sys
 import time
-from typing import Any, Optional
+from typing import Any, Optional, BinaryIO
 import aiohttp
 import anyio
 import anyio.abc
@@ -227,11 +228,8 @@ async def _download_file(
         for _ in range(10):
             size = 0
             hash = utils.get_hash_obj(file.hash)
-            tmp_file = io.BytesIO()
             try:
-                async with session.get(
-                    file.path
-                ) as resp:
+                async with session.get(file.path) as resp, tempfile.TemporaryFile() as tmp_file:
                     while (data := await resp.content.read(1024 * 1024 * 16)):
                         tmp_file.write(data)
                         hash.update(data)
@@ -241,17 +239,18 @@ async def _download_file(
                         pbar.update(inc)
                     if hash.hexdigest() != file.hash or size != file.size:
                         await anyio.sleep(50)
-                        raise Exception(f"hash mismatch, got {hash.hexdigest()} expected {file.hash}")
-                await self.upload_storage(file, tmp_file, size)
-                self.update_success()
+                        raise Exception(
+                            f"hash mismatch, got {hash.hexdigest()} expected {file.hash}"
+                        )
+                    tmp_file.seek(0)
+                    await self.upload_storage(file, tmp_file, size)
+                    self.update_success()
             except Exception as e:
                 last_error = e
                 self._pbar.update(-size)
                 pbar.update(-size)
                 self.update_failed()
                 continue
-            finally:
-                tmp_file.close()
             return None
         if last_error is not None:
             raise last_error
@@ -259,7 +258,7 @@ async def _download_file(
     async def upload_storage(
         self,
         file: BMCLAPIFile,
-        data: io.BytesIO,
+        data: BinaryIO,
         size: int
     ):
         missing_storage = [
@@ -598,14 +597,21 @@ async def get_files(self) -> list[BMCLAPIFile]:
                     if resp.status == 204: # no new files
                         #logger.tdebug("cluster.get_files.no_new_files", id=self.id)
                         return results
-                    reader = utils.AvroParser(zstd.decompress(await resp.read()))
-                    for _ in range(reader.read_long()):
-                        results.append(BMCLAPIFile(
-                            reader.read_string(),
-                            reader.read_string(),
-                            reader.read_long(),
-                            reader.read_long() / 1000.0,
-                        ))
+                    with tempfile.TemporaryFile() as tmp:
+                        async for chunk in resp.content.iter_chunked(1024 * 1024 * 4):
+                            tmp.write(chunk)
+                        tmp.seek(0)
+                        with zstd.open(tmp, 'rb') as zf:
+                            reader = utils.AvroParser(zf)
+                            for _ in range(reader.read_long()):
+                                results.append(
+                                    BMCLAPIFile(
+                                        reader.read_string(),
+                                        reader.read_string(),
+                                        reader.read_long(),
+                                        reader.read_long() / 1000.0,
+                                    )
+                                )
                     self._last_modified = max(results, key=lambda x: x.mtime).mtime
                     logger.tdebug("cluster.get_files", id=self.id, name=self.display_name, count=len(results), size=units.format_bytes(sum([f.size for f in results])), last_modified=units.format_datetime_from_timestamp(self._last_modified))
         except:
diff --git a/core/dashboard.py b/core/dashboard.py
index 993da8a..0c81ee5 100644
--- a/core/dashboard.py
+++ b/core/dashboard.py
@@ -68,12 +68,12 @@ def stop(
     ):
         self._running = 0
 
-    def update(
+    async def update(
         self,
     ):
         while self._running:
             try:
-                self.cpus.append(self.process.cpu_percent(interval=1))
+                self.cpus.append(self.process.cpu_percent(interval=None))
 
                 memory = self.process.memory_full_info()
 
@@ -83,6 +83,7 @@ def update(
                 ))
             except:
                 break
+            await anyio.sleep(1)
 
     def get_info(self) -> dict[str, Any]:
         return {
diff --git a/core/database/memory.py b/core/database/memory.py
index 2c4e83a..ed17612 100644
--- a/core/database/memory.py
+++ b/core/database/memory.py
@@ -1,4 +1,4 @@
-from collections import defaultdict
+from collections import defaultdict, deque
 from datetime import datetime
 from typing import Any
 from .abc import DataBase, ClusterCounterInfo
@@ -11,7 +11,7 @@ def __init__(
     ):
         super().__init__(database_name)
 
-        self._clusters_logs = []
+        self._clusters_logs = deque(maxlen=10000)
         self._clusters_counters: defaultdict[int, defaultdict[str, defaultdict[str, int]]] = defaultdict(lambda: defaultdict(lambda: defaultdict(int)))
 
     async def insert_cluster_info(self, cluster_id: str, type: str, event: str, data: Any | None = None):
diff --git a/core/storage/abc.py b/core/storage/abc.py
index ac15844..1b00512 100644
--- a/core/storage/abc.py
+++ b/core/storage/abc.py
@@ -2,6 +2,8 @@
 
 import anyio.abc
 import io
+import tempfile
+from typing import BinaryIO
 
 from core import utils
 from core.abc import BMCLAPIFile, ResponseFile, ResponseFileNotFound, ResponseFileMemory, ResponseFileLocal, ResponseFileRemote
@@ -151,15 +153,15 @@ async def works(root_ids: list[int]):
     async def upload(
         self,
         path: str,
-        data: io.BytesIO,
+        data: BinaryIO,
         size: int
     ):
         raise NotImplementedError
 
-    async def upload_download_file(self, path: str, data: io.BytesIO, size: int):
+    async def upload_download_file(self, path: str, data: BinaryIO, size: int):
         if self.download_dir:
             path = f"download/{path}"
-        await self.upload(f"download/{path}", data, size)
+        await self.upload(path, data, size)
 
     async def get_response_file(
         self,
@@ -196,12 +198,19 @@ def path(self) -> 'CPath':
     async def write_measure(self, size: int):
         path = f"measure/{size}"
         size = size * 1024 * 1024
-        
-        await self.upload(
-            path,
-            io.BytesIO(b"\x00" * size),
-            size
-        )
+        chunk = b"\x00" * (1024 * 1024)
+        with tempfile.TemporaryFile() as tmp:
+            remain = size
+            while remain > 0:
+                w = min(remain, len(chunk))
+                tmp.write(chunk[:w])
+                remain -= w
+            tmp.seek(0)
+            await self.upload(
+                path,
+                tmp,
+                size
+            )
         logger.tsuccess("storage.write_measure", size=int(size / (1024 * 1024)), name=self.name, type=self.type)
 
 
diff --git a/core/storage/alist.py b/core/storage/alist.py
index d3ae2ab..575d850 100644
--- a/core/storage/alist.py
+++ b/core/storage/alist.py
@@ -1,6 +1,6 @@
 import io
 import time
-from typing import Any
+from typing import Any, BinaryIO
 import urllib.parse as urlparse
 import aiohttp
 import anyio.abc
@@ -174,7 +174,7 @@ async def list_files(self, path: str) -> list[abc.FileInfo]:
                     ))
         return res
     
-    async def upload(self, path: str, data: io.BytesIO, size: int):
+    async def upload(self, path: str, data: BinaryIO, size: int):
         async with aiohttp.ClientSession(
             base_url=self._endpoint,
             headers={
@@ -187,7 +187,7 @@ async def upload(self, path: str, data: io.BytesIO, size: int):
                 headers={
                     "File-Path": urlparse.quote(str(self._path / path)),
                 },
-                data=data.getbuffer()
+                data=data
             ) as resp:
                 alist_resp = AlistResponse(await resp.json())
                 alist_resp.raise_for_status()
diff --git a/core/storage/local.py b/core/storage/local.py
index 73dabda..ca7a27f 100644
--- a/core/storage/local.py
+++ b/core/storage/local.py
@@ -1,6 +1,8 @@
 from pathlib import Path
 import io
 import time
+import shutil
+from typing import BinaryIO
 import anyio.abc
 
 from core.abc import ResponseFile, ResponseFileLocal, ResponseFileNotFound
@@ -53,13 +55,14 @@ async def list_files(
     async def upload(
         self,
         path: str,
-        data: io.BytesIO,
+        data: BinaryIO,
         size: int
     ):
         root = Path(str(self.path)) / path
         root.parent.mkdir(parents=True, exist_ok=True)
         with open(root, "wb") as f:
-            f.write(data.getbuffer())
+            data.seek(0)
+            shutil.copyfileobj(data, f)
         return True
 
     async def _check(
diff --git a/core/storage/minio.py b/core/storage/minio.py
index a710bc2..70bed0b 100644
--- a/core/storage/minio.py
+++ b/core/storage/minio.py
@@ -1,6 +1,7 @@
 from datetime import timedelta
 import datetime
 import io
+from typing import BinaryIO
 import time
 from typing import Optional
 import urllib.parse as urlparse
@@ -92,15 +93,15 @@ async def list_files(
     async def upload(
         self,
         path: str,
-        data: io.BytesIO,
+        data: BinaryIO,
         size: int
     ):
         root = self.path / path
-        
+
         await self.minio.put_object(
             self.bucket,
             str(root)[1:],
-            data.getbuffer(),
+            data,
             size
         )
         return True
diff --git a/core/storage/s3.py b/core/storage/s3.py
index f1cd0e4..aa5a678 100644
--- a/core/storage/s3.py
+++ b/core/storage/s3.py
@@ -1,5 +1,6 @@
 from io import BytesIO
 import io
+from typing import BinaryIO
 import time
 import aioboto3.session
 import anyio.abc
@@ -136,7 +137,7 @@ async def list_files(
     async def upload(
         self,
         path: str,
-        data: io.BytesIO,
+        data: BinaryIO,
         size: int
     ):
         async with self.session.resource(
diff --git a/core/storage/webdav.py b/core/storage/webdav.py
index a251ef1..e884781 100644
--- a/core/storage/webdav.py
+++ b/core/storage/webdav.py
@@ -1,5 +1,6 @@
 import io
 import time
+from typing import BinaryIO
 import aiohttp
 import aiowebdav.client
 import anyio
@@ -128,10 +129,10 @@ async def _mkdir(self, parent: abc.CPath):
             for parent in parent.parents:
                 await self.client.mkdir(str(parent))
 
-    async def upload(self, path: str, data: io.BytesIO, size: int):
+    async def upload(self, path: str, data: BinaryIO, size: int):
         # check dir
         await self._mkdir((self._path / path).parent)
-        await self.client.upload_to(io.BytesIO(data.getbuffer()), str(self._path / path))
+        await self.client.upload_to(data, str(self._path / path))
         return True
     
     
diff --git a/core/utils.py b/core/utils.py
index 08e9c9f..272974b 100644
--- a/core/utils.py
+++ b/core/utils.py
@@ -30,12 +30,17 @@
 V = TypeVar("V") 
 T = TypeVar("T")
 
+from typing import BinaryIO
+
 class AvroParser:
     def __init__(
         self,
-        data: bytes
+        data: bytes | BinaryIO
     ):
-        self.data = io.BytesIO(data)
+        if isinstance(data, (bytes, bytearray)):
+            self.data = io.BytesIO(data)
+        else:
+            self.data = data
 
     def read_long(self): 
         result, shift = 0, 0