# apache/servicecomb-pack

Apache ServiceComb Pack is an eventually data consistency solution for micro-service applications. ServiceComb Pack currently provides TCC and Saga distributed transaction co-ordination solutions by using Alpha as a transaction coordinator and Omega as an transaction agent .

Repository: https://github.com/apache/servicecomb-pack
Canonical: https://ross.abutalabs.com/products/servicecomb-pack
Homepage: https://servicecomb.apache.org/
Language: Java
License: Apache-2.0
License Family: permissive
Topics: servicecomb
Archived: true
Last push: 2024-10-03T18:46:26+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3333, "days_push": 699, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1912, forks 427 (observed 2026-08-28T04:05:53.348594+00:00)

## What it is
Apache ServiceComb Pack is an eventually consistent distributed transaction solution for microservice applications, providing Saga and TCC coordination protocols. It consists of Alpha, a stateless transaction coordinator that persists transaction events to a database, and Omega, an in-process agent that intercepts requests and reports events over gRPC.

## Use cases
- coordinate distributed transactions across microservices
- implement saga pattern with compensating transactions
- add TCC (try-confirm-cancel) transactions to Java microservices
- ensure eventual data consistency when a service call fails mid-workflow
- run a highly available transaction coordinator with persistent event storage
- add transaction boundaries with minimal annotations in Spring Boot services

## When to choose
- you need saga or TCC distributed transactions in a JVM/Spring-based microservice system
- you want low-invasion transaction coordination via annotations and compensation methods
- you need durable, database-backed transaction event storage with a stateless coordinator for HA

## When to avoid
- you need an actively maintained project - the maintainers state it is inactive due to lack of maintainers
- your stack is not JVM-based (only community Go/C# Omega ports exist, unofficial)
- you only need simple local transactions or a modern alternative like Seata or Temporal

## Facets
- artifact type: framework
- maturity: abandoned
- function: microservices, middleware, rpc, serialization, database
- domain: microservices, backend, developer-tools
- platform: jvm, cross-platform
- tags: distributed-transactions, saga, tcc, eventual-consistency, transaction-coordination, grpc, compensation, docker

## Member repositories
- apache/servicecomb-pack (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:53.348594+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 2026-08-30T03:10:38.338228+00:00, confidence not recorded.
  - readme: https://github.com/apache/servicecomb-pack (fetched 2026-08-28T04:05:53.348594+00:00, sha cd7c57e595cc)
  - homepage: https://servicecomb.apache.org/ (fetched 2026-08-29T10:49:54.133969+00:00, sha fd6b71363b6b)
  - site_page: https://servicecomb.apache.org/docs/users (fetched 2026-08-29T10:49:54.143035+00:00, sha c41a1f3bb586)
  - site_page: https://servicecomb.apache.org/docs/getting-started (fetched 2026-08-29T10:49:54.144840+00:00, sha c576401af5e2)
  - site_page: https://servicecomb.apache.org/docs/servicecomb-accept-newcapec-institute-code-donation (fetched 2026-08-29T10:49:54.149517+00:00, sha e2908ba75ad7)
  - site_page: https://servicecomb.apache.org/docs/Apache-ServiceComb-Meetup-2019-Shanghai-KubeCon+CloudNative+OSS-Report (fetched 2026-08-29T10:49:54.151618+00:00, sha 00c5b4f6565f)
  - site_page: https://servicecomb.apache.org/docs/chuanzhiboke-servicecomb-tutoria-release (fetched 2026-08-29T10:49:54.153722+00:00, sha 8685ccd137d2)
  - site_page: https://servicecomb.apache.org/faqs (fetched 2026-08-29T10:49:54.146633+00:00, sha d45b4a99d7ff)
- Data as of 2026-08-30T08:39:29.467469+00:00.