incubator-seata

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# Apache Seata (incubating): Simple Extensible Autonomous Transaction Architecture

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## What is Apache Seata (incubating)?

A **distributed transaction solution** with high performance and ease of use for **microservices** architecture.
### Distributed Transaction Problem in Microservices

Let's imagine a traditional monolithic application. Its business is built up with 3 modules. They use a single local data source.

Naturally, data consistency will be guaranteed by the local transaction.

![Monolithic App](https://img.alicdn.com/imgextra/i3/O1CN01FTtjyG1H4vvVh1sNY_!!6000000000705-0-tps-1106-678.jpg) 

Things have changed in a microservices architecture. The 3 modules mentioned above are designed to be 3 services on top of 3 different data sources ([Pattern: Database per service](http://microservices.io/patterns/data/database-per-service.html)). Data consistency within every single service is naturally guaranteed by the local transaction. 

**But how about the whole business logic scope?**

![Microservices Problem](https://img.alicdn.com/imgextra/i1/O1CN01DXkc3o1te9mnJcHOr_!!6000000005926-0-tps-1268-804.jpg) 

## Architecture

Apache Seata offers a robust solution to the distributed transaction challenges in microservices.

![Seata solution](https://img.alicdn.com/imgextra/i1/O1CN01FheliH1k5VHIRob3p_!!6000000004632-0-tps-1534-908.jpg)

### Core Concepts

A **Distributed Transaction** is a **Global T