DTM is the first distributed transaction management framework in Golang. Unlike other frameworks, DTM provides extremely easy access interfaces of HTTP and gRPC, supports multiple language bindings, and handles tricky problems of unordered sub-transactions at the framework level.
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Extremely easy to adapt
- Support HTTP and gRPC, provide easy-to-use programming interfaces, lower substantially the barrier of getting started with distributed transactions. Newcomers can adapt quickly.
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Easy to use
- Relieving developers from worrying about suspension, null compensation, idempotent transaction, and other tricky problems, the framework layer handles them all.
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Language-agnostic
- Suit for companies with multiple-language stacks. Easy to write bindings for Go, Python, PHP, Node.js, Ruby, and other languages.
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Easy to deploy, easy to extend
- DTM depends only on MySQL, easy to deploy, cluster, and scale horizontally.
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Support for multiple distributed transaction protocol
- TCC, SAGA, XA, Transactional messages.
There is no mature open-source distributed transaction framework for non-Java languages. Mature open-source distributed transaction frameworks for Java language include Ali's Seata, Huawei's ServiceComb-Pack, Jingdong's shardingsphere, himly, tcc-transaction, ByteTCC, and so on, of which Seata is most widely used.
The following is a comparison of the main features of dtm and Seata.
| Features | DTM | Seata | Remarks |
|---|---|---|---|
| Supported languages | Golang, Python, PHP, and others | Java | dtm allows easy access from a new language |
| Exception handling | Sub-transaction barrier | manual | dtm solves idempotent transaction, hanging, null compensation |
| TCC | ✓ | ✓ | |
| XA | ✓ | ✓ | |
| AT | ✗ | ✓ | AT is similar to XA with better performance but with dirty rollback |
| SAGA | Simple mode | complicated state-machine mode | dtm's state-machine mode is being planned |
| Transactional Messaging | ✓ | ✗ | dtm provides Transactional Messaging similar to RocketMQ |
| Multiple DBs in a service | ✓ | ✗ | |
| Communication protocols | HTTP, gRPC | Dubbo, no HTTP | |
| Star count |  |
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dtm 0.1 is released from 20210604 and under fast development |
From the features' comparison above, if your language stack includes languages other than Java, then dtm is the one for you. If your language stack is Java, you can also choose to access dtm and use sub-transaction barrier technology to simplify your business development.
git clone https://github.com/yedf/dtm
cp conf.sample.yml conf.yml # Modify conf.yml
go run app/main.go
// business micro-service address
const qsBusi = "http://localhost:8081/api/busi_saga"
// The address where DtmServer serves DTM, which is a url
DtmServer := "http://localhost:8080/api/dtmsvr"
req := &gin.H{"amount": 30} // micro-service payload
// DtmServer is the address of DTM micro-service
saga := dtmcli.NewSaga(DtmServer, dtmcli.MustGenGid(DtmServer)).
// add a TransOut subtraction，forward operation with url: qsBusi+"/TransOut", reverse compensation operation with url: qsBusi+"/TransOutCompensate"
Add(qsBusi+"/TransOut", qsBusi+"/TransOutCompensate", req).
// add a TransIn subtraction, forward operation with url: qsBusi+"/TransIn", reverse compensation operation with url: qsBusi+"/TransInCompensate"
Add(qsBusi+"/TransIn", qsBusi+"/TransInCompensate", req)
// submit the created saga transaction，dtm ensures all subtractions either complete or get revoked
err := saga.Submit()Refer to examples/quick_start.go.
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