# vipshop/Saturn

The vip.com's distributed job scheduling platform.

Repository: https://github.com/vipshop/Saturn
Canonical: https://ross.abutalabs.com/products/saturn
Language: Java
License: Apache-2.0
License Family: permissive
Topics: saturn, java, vipshop, job, scheduling
Last push: 2025-11-12T10:34:10+00:00

## Health v2 (maintenance only)
Score: 46/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 51, release rhythm 8, longevity 100
- inputs: {"age_days": 3563, "days_push": 294, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2304, forks 686 (observed 2026-08-28T04:06:35.657975+00:00)

## What it is
Saturn is a distributed, fault-tolerant job scheduling platform developed by VIP.com, supporting time-based jobs, parallel sharding, and web-based management. It evolved from Dangdang's elastic-job and handles billions of scheduled executions per day.

## Use cases
- schedule distributed cron jobs across a cluster
- run parallel sharded batch jobs
- get failover for scheduled tasks
- manage jobs via a web console
- monitor job execution statistics
- run second-level frequent scheduled jobs

## When to choose
- you need fault-tolerant distributed job scheduling on the JVM
- you want sharding and load-based job allocation
- you need a web console and monitoring for scheduled jobs

## When to avoid
- you only need simple single-node cron scheduling
- your stack is not Java/JVM-based
- you want a lightweight scheduler without extra infrastructure

## Facets
- artifact type: application
- maturity: active
- function: scheduling, workflow-automation, monitoring
- domain: microservices, backend
- platform: jvm, self-hosted
- tags: job-scheduler, distributed-jobs, sharding, fault-tolerant, elastic-job, devops, automation, docker, web-server

## Member repositories
- vipshop/Saturn (main) score 46

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:35.657975+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 2026-08-30T02:39:44.691825+00:00, confidence not recorded.
  - readme: https://github.com/vipshop/Saturn (fetched 2026-08-28T04:06:35.657975+00:00, sha cb4cb293b42b)
- Data as of 2026-08-30T08:39:29.467469+00:00.