Programming language: Go
License: BSD 3-clause "New" or "Revised" License
Tags: Database    

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Distributed Transactions Manager

What is DTM

DTM is a distributed transaction framework which provides cross-service eventual data consistency. It provides saga, tcc, xa, 2-phase message strategies for a variety of application scenarios. It also supports multiple languages and multiple store engine to form up a transaction as following:

Who's using DTM (partial)





  • Language-agnostic

    • Suit for companies with multiple-language stacks. Easy to write bindings for Go, Python, PHP, Node.js, Ruby, and other languages.
  • Support for multiple distributed transaction solutions

    • TCC, SAGA, XA, 2-phases message.
  • 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.
  • Easy to use

    • Relieving developers from worrying about suspension, null compensation, idempotent transaction, and other tricky problems, the framework layer handles them all.
  • Easy to deploy, easy to extend

    • DTM depends only on MySQL/Redis, easy to deploy, cluster, and scale horizontally.

Cook Book

Quick start

run dtm

git clone https://github.com/dtm-labs/dtm && cd dtm
go run main.go

Start an example

Suppose we want to perform an inter-bank transfer. The operations of transfer out (TransOut) and transfer in (TransIn) are coded in separate micro-services.

Here is an example to illustrate a solution of dtm to this problem:

git clone https://github.com/dtm-labs/dtmcli-go-sample && cd dtmcli-go-sample
go run 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:36789/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+"/TransOutCom"
        Add(qsBusi+"/TransOut", qsBusi+"/TransOutCom", req).
        // add a TransIn subtraction, forward operation with url: qsBusi+"/TransIn", reverse compensation operation with url: qsBusi+"/TransInCom"
        Add(qsBusi+"/TransIn", qsBusi+"/TransInCom", req)
    // submit the created saga transaction,dtm ensures all subtractions either complete or get revoked
    err := saga.Submit()

When the above code runs, we can see in the console that services TransOut, TransIn has been called.

Timing diagram

A timing diagram for a successfully completed SAGA transaction would be as follows:

Rollback upon failure

If any forward operation fails, DTM invokes the corresponding compensating operation of each sub-transaction to roll back, after which the transaction is successfully rolled back.

Let's purposely fail the forward operation of the second sub-transaction and watch what happens

app.POST(qsBusiAPI+"/TransIn", func(c *gin.Context) {
  // c.JSON(200, "")
  c.JSON(409, "") // Status 409 for Failure. Won't be retried

The timing diagram for the intended failure is as follows:

More examples

Refer to dtm-examples.


You can join the DTM slack channel here.

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*Note that all licence references and agreements mentioned in the dtf README section above are relevant to that project's source code only.