Repo brief: Netflix/Hystrix

Generated by RepoPilot · document generated 2026-09-13 · concise human review Evidence snapshot · analyzed 2026-09-13T06:09:05.399Z · commit 5ce3bc58c38e

Verdict

Mixed — Slowing — last commit 5mo ago

• Last commit 5mo ago
• 26+ active contributors
• Distributed ownership (top contributor 38% of recent commits)
• CI configured
• 1 more receipt on the live page

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests

What it is

Hystrix is a latency and fault-tolerance library for Java that isolates access to remote services and dependencies via circuit breakers, timeouts, and thread/semaphore pooling to prevent cascading failures in distributed systems. It wraps synchronous and asynchronous calls with bulkheads (thread pools or semaphores) and automatically triggers fallbacks when services degrade, stop cascading failures before they spread across your service mesh. Multi-module Gradle monorepo: hystrix-core contains the circuit breaker engine and command/request abstractions; hystrix-contrib houses optional integrations (hystrix-clj for Clojure, hystrix-codahale-metrics-publisher for metrics export). CI…

Start here

Open these first:

• README.md — Project overview explaining Hystrix is in maintenance mode; critical for understanding project status and recommendations…
• build.gradle — Root build configuration using Nebula Netflix OSS plugin; defines all subproject dependencies and build structure that all…
• hystrix-contrib/hystrix-javanica/src/main/java/com/netflix/hystrix/contrib/javanica/annot… — Core annotation interface for marking methods as Hystrix commands; primary API entry point that contributors extending…
• hystrix-contrib/hystrix-javanica/src/main/java/com/netflix/hystrix/contrib/javanica/aop/a… — AspectJ weaving implementation that intercepts @HystrixCommand annotations; load-bearing infrastructure for…
• hystrix-contrib/hystrix-codahale-metrics-publisher/src/main/java/com/netflix/hystrix/cont… — Core metrics publisher for Codahale integration; demonstrates the metrics publishing pattern used throughout contrib modules

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

git clone https://github.com/Netflix/Hystrix.git
cd Hystrix
./gradlew build
./gradlew test

Gradlew wrapper (gradlew, gradlew.bat) handles Gradle setup. JDK 8+ required. Check gradle.properties for Gradle version.

Daily commands:

./gradlew build          # Compile all modules
./gradlew test           # Run unit/integration tests
./gradlew assemble       # Build all JARs without running tests
./gradlew publishToMavenLocal  # Publish to local Maven repo for local testing

No dev server — this is a library, not an application. Examples live in hystrix-examples (check GitHub for runnable demo projects).

Key cautions & unknowns

• Slowing — last commit 5mo ago
• 1) Maintenance mode stasis: Code builds and tests pass, but pull requests are not merged. Do not expect bug fixes or security patches from Netflix. 2) Version lock: Final release is v1.5.18; do not expect…
• License evidence is incomplete or ambiguous.
• Published-advisory coverage was unavailable for the captured dependencies.
• Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

• Repository source
• Open issues
• Recent pull requests

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

---

For the complete agent context, use the CLAUDE.md or Cursor rules export.