jepsen-io/jepsen
A framework for distributed systems verification, with fault injection observed · 2026-08-28
Health v2 · maintenance only
89/100
- Activity 99
- Release rhythm 71
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 97
- age_days: 4889
- days_rel: 34
- days_push: 7
- n_releases_24m: 8
Adoption not part of the score
7481 stars · 754 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Jepsen is a Clojure library and framework for verifying the correctness of distributed systems under fault injection. It sets up systems on remote nodes, runs concurrent client operations, injects faults via a nemesis, and checks the resulting history for consistency violations.
Use cases
- verify linearizability of a distributed database
- test how a system behaves under network partitions
- check consistency of a distributed task scheduler
- generate performance and availability graphs during faults
- inject clock skew and crash faults into a cluster
- validate eventual consistency guarantees
When to choose
- you need rigorous correctness verification of a distributed system
- you want to reproduce and analyze consistency anomalies under faults
- you are building or auditing a database, queue, or coordination service
When to avoid
- you need simple unit or integration tests without distributed fault injection
- you cannot provision SSH-accessible test nodes
- your team has no Clojure/JVM experience and only needs ad-hoc smoke tests
Facets
framework · maturity active
testing e2e-testing benchmarking fuzzing microservices databases testing developer-tools jvm-scripting jvm cli distributed-systems-verification fault-injection consistency-checking nemesis chaos-engineering linux
1 source
- readme: https://github.com/jepsen-io/jepsen · fetched 2026-08-28 · 64e28dfc68c6
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| jepsen-io/jepsen | main | 89 |
For agents
markdown · JSON · MCP: product_card(name="jepsen-io/jepsen")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem