From 7f0f61975340de4ee357e1943cf1ad03aea64629 Mon Sep 17 00:00:00 2001
From: yedf2 <43027375+yedf2@users.noreply.github.com>
Date: Fri, 4 Mar 2022 20:10:46 +0800
Subject: [PATCH] Update README.md
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-
-
-[](https://codecov.io/gh/dtm-labs/dtm)
-[](https://goreportcard.com/report/github.com/dtm-labs/dtm)
-[](https://pkg.go.dev/github.com/dtm-labs/dtm)
-[](https://github.com/avelino/awesome-go#database)
-
-English | [简体中文](https://github.com/dtm-labs/dtm/blob/main/helper/README-cn.md)
-
-# 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)
-
-[Tencent](https://www.tencent.com/)
-
-[Ivydad](https://ivydad.com)
-
-[Eglass](https://epeijing.cn)
-
-## [Cook Book](https://en.dtm.pub)
-
-## Quick start
-
-### run dtm
-
-``` bash
-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:
-
-``` bash
-git clone https://github.com/dtm-labs/dtmcli-go-sample && cd dtmcli-go-sample
-go run main.go
-```
-
-## Code
-
-### Use
-``` 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
-
-``` go
-app.POST(qsBusiAPI+"/TransIn", func(c *gin.Context) {
- log.Printf("TransIn")
- // 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](https://github.com/dtm-labs/dtm-examples) for more examples.
-
-## Slack
-
-You can join the [DTM slack channel here](https://join.slack.com/t/dtm-w6k9662/shared_invite/zt-vkrph4k1-eFqEFnMkbmlXqfUo5GWHWw).
-
-## Give a star! ⭐
-
-If you think this project is interesting, or helpful to you, please give a star!
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