# dromara/raincat

强一致分布式事务框架

Repository: https://github.com/dromara/raincat
Canonical: https://ross.abutalabs.com/products/raincat
Homepage: https://dromara.org/
Language: Java
License: LGPL-3.0
License Family: copyleft
Topics: spring-cloud, spi, dubbo, netty, spring, jdk8, tcc, soa, transaction
Last push: 2023-03-01T16:56:51+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3288, "days_push": 1281, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1907, forks 646 (observed 2026-08-28T04:05:52.555483+00:00)

## What it is
Raincat is a strongly consistent distributed transaction framework for Java, implementing TCC-style transactions across RPC frameworks. It includes a Netty-based transaction coordinator (raincat-admin) and integrations for Spring Cloud, Dubbo, and Motan, with pluggable transaction log storage and serialization via SPI.

## Use cases
- manage distributed transactions across microservices
- ensure strong consistency in TCC transactions
- coordinate rollback across dubbo or spring cloud services
- add distributed transaction support to a spring boot app
- store transaction logs in redis, mongodb, zookeeper, mysql, or files
- support nested transactions in a SOA architecture

## When to choose
- you need strongly consistent, TCC-based distributed transactions in a Java Spring stack
- your services communicate over Dubbo, Motan, or Spring Cloud RPC
- you want pluggable transaction log storage and serialization via SPI extensions

## When to avoid
- you use Dubbo 2.7+ or non-Spring frameworks
- you prefer eventual consistency or saga/AT patterns - consider Hmily or Seata instead
- you need a project with frequent recent releases and active development

## Facets
- artifact type: framework
- maturity: maintenance
- function: microservices, rpc, middleware, serialization, plugin-system
- domain: microservices, backend, developer-tools
- platform: jvm
- tags: distributed-transactions, tcc, transaction-coordinator, netty, spring-boot-starter, soa, spring, dubbo, spring-cloud

## Member repositories
- dromara/raincat (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:52.555483+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:11:15.702128+00:00, confidence not recorded.
  - readme: https://github.com/dromara/raincat (fetched 2026-08-28T04:05:52.555483+00:00, sha 1b2b0242c95f)
  - homepage: https://dromara.org/ (fetched 2026-08-29T10:50:25.461298+00:00, sha e88b9e3207c1)
  - site_page: https://dromara.org/about (fetched 2026-08-29T10:50:25.470627+00:00, sha c600af794983)
  - site_page: https://dromara.org/zh/about (fetched 2026-08-29T10:50:25.472518+00:00, sha a59146dc5767)
- Data as of 2026-08-30T08:39:29.467469+00:00.