circuit-breaker — open-source software health

NuGet

99Exceptionalhealth index

Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+.

C#★ 14.2KAug 27, 2026

BSD-3-ClauseAug 27, 2026 · metrics 2.10.0

94Exceptionalhealth index

istio/istio

Connect, secure, control, and observe services.

Go★ 38.4KSep 16, 2026

Apache-2.0Sep 16, 2026 · metrics 2.10.0

RubyGems

92Excellenthealth index

bolshakov/stoplight

:traffic_light: Traffic control for code.

Ruby★ 629Sep 13, 2026

MITSep 13, 2026 · metrics 2.10.0

RubyGems

90Excellenthealth index

Shopify/semian

:monkey: Resiliency toolkit for Ruby for failing fast

Ruby★ 1,490Oct 21, 2026

MITOct 21, 2026 · metrics 2.10.0

Maven

90Excellenthealth index

alibaba/spring-cloud-alibaba

Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.

Java★ 29.2KSep 16, 2026

Apache-2.0Sep 16, 2026 · metrics 2.10.0

PyPI · crates.io

88Excellenthealth index

cachekit-io/cachekit-py

Backend-agnostic caching for Python — intent-based decorators with circuit breaker, distributed locking, Prometheus metrics, and optional zero-knowledge AES-256-GCM encryption, on a Rust-powered core. Zero-config L1 in-memory; scales to Redis, Memcached, File, or CacheKit Cloud.

Python★ 4↓ 13.6K/moOct 18, 2026

MITOct 18, 2026 · metrics 2.10.0

PyPI

86Excellenthealth index

grelinfo/grelmicro

Grelmicro is a lightweight framework/toolkit which is ideal for building async microservices in Python.

Python★ 4↓ 2,596/moSep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

PyPI

84Excellenthealth index

AhsanSheraz/pyresilience

Unified resilience patterns for Python — retry, circuit breaker, timeout, fallback, bulkhead, rate limiter, and cache in one decorator. Python's Resilience4j.

Python★ 79↓ 55.6K/moOct 19, 2026

MITOct 19, 2026 · metrics 2.10.0

84Excellenthealth index

netresearch/go-cron

Go cron job scheduler — drop-in replacement for robfig/cron with runtime updates, resilience middleware, and active maintenance

Go★ 64Sep 20, 2026

MITSep 20, 2026 · metrics 2.10.0

npm

83Excellenthealth index

nodeshift/opossum

Node.js circuit breaker - fails fast ⚡️

JavaScript★ 1,687↓ 4.9M/moSep 15, 2026

Apache-2.0Sep 15, 2026 · metrics 2.10.0

npm · PyPI

81Excellenthealth index

Das-rebel/a3m-router

⚠️ DEPRECATED — Use adaptive-memory-multi-model-router instead

TypeScript · Python · JavaScript★ 16↓ 3,366/moSep 18, 2026

MITSep 18, 2026 · metrics 2.10.0

crates.io

81Excellenthealth index

joshrotenberg/tower-resilience

Resilience features for tower

Rust★ 104↓ 14.3K/moSep 15, 2026

Apache-2.0Sep 15, 2026 · metrics 2.10.0

npm

80Excellenthealth index

Moro-JS/moro

Moro is a high-performance, type-safe API framework with intelligent routing and multi-runtime support (Node, Edge, Lambda, Workers).

TypeScript★ 79↓ 894/moSep 8, 2026

MITSep 8, 2026 · metrics 2.10.0

Maven · npm

80Excellenthealth index

The-Pipeline-Framework/pipelineframework

Build with AI. Run with guarantees. TPF is a Java framework for strongly typed business flows that compose model decisions, authorised SaaS capabilities, and deterministic code—with durable effects, waits, retries, replay, observability, and flexible deployment.

JavaScript · Svelte★ 5Oct 19, 2026

Custom licenseOct 19, 2026 · metrics 2.10.0

80Excellenthealth index

felixgeelhaar/jirasdk

Enterprise-grade Go client for Jira Cloud & Server/Data Center REST APIs. Features resilience patterns, environment config, zero-allocation logging, and comprehensive documentation. Production-ready with full context support.

Go★ 1Sep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

RubyGems · crates.io

80Excellenthealth index

seuros/breaker_machines

Modern circuit breaker for Ruby & Rails. Thread-safe, fiber-ready async support. Built-in fallbacks, rich introspection, clean DSL. Memory-efficient with jitter & monitoring.

Ruby · Rust★ 112Oct 14, 2026

MITOct 14, 2026 · metrics 2.10.0

Maven · npm

78Goodhealth index

ratchet-run/ratchet

A Java CDI-native scheduler for persistent jobs with retries, batches, workflows, encryption, and delayed signals.

Java★ 26Sep 13, 2026

Apache-2.0Sep 13, 2026 · metrics 2.10.0

77Goodhealth index

go-resty/resty

Simple HTTP, REST, and SSE client library for Go

Go★ 11.8KAug 27, 2026

MITAug 27, 2026 · metrics 2.10.0

Go · PyPI

77Goodhealth index

jhonsferg/relay

A resilient, extensible HTTP client for Go with middleware, circuit breakers, rate limiting, caching, and OpenTelemetry support

Go★ 3Oct 21, 2026

MITOct 21, 2026 · metrics 2.10.0

Go · PyPI

77Goodhealth index

klarlabs-studio/fortify

Production-grade resilience for Go services calling LLMs and tools. Composable patterns — circuit breaker, retry, rate limit, timeout, bulkhead, fallback, hedge, adaptive concurrency, cost budget, stream timeout — with first-class OpenTelemetry, Prometheus, and slog observability. Zero core deps.

Go★ 0Sep 14, 2026

MITSep 14, 2026 · metrics 2.10.0

Maven

75Goodhealth index

alibaba/Sentinel

A powerful flow control component enabling reliability, resilience and monitoring for microservices. (面向云原生微服务的高可用流控防护组件)

Java★ 23.1KSep 16, 2026

Apache-2.0Sep 16, 2026 · metrics 2.10.0

npm

75Goodhealth index

eridu-tech/eridu-tech-core

eridu-tech - The adapter-first, modular and framework agnostic backend platform for TypeScript

TypeScript★ 8↓ 736/moSep 13, 2026

Apache-2.0Sep 13, 2026 · metrics 2.10.0

NuGet

71Goodhealth index

ZeroAlloc-Net/ZeroAlloc.Resilience

Source-generated, zero-allocation resilience policies for .NET — Retry, Timeout, RateLimit, and CircuitBreaker as attributes on an interface.

C#★ 0Sep 19, 2026

MITSep 19, 2026 · metrics 2.10.0

Go · PyPI

71Goodhealth index

aponysus/recourse

Policy-driven, observable resilience for Go services: retries, hedging, circuit breaking, and budgets.

Go★ 1Sep 28, 2026

Apache-2.0Sep 28, 2026 · metrics 2.10.0

71Goodhealth index

danielPoloWork/egl-utils-go

Production-ready Go utilities for concurrency, resilience, HTTP middleware, configuration, and observability.

Go · Python★ 1Sep 19, 2026

MITSep 19, 2026 · metrics 2.10.0

npm

71Goodhealth index

nodeshift/opossum-prometheus

Prometheus metrics for opossum circuit breakers

JavaScript★ 24↓ 49K/moSep 15, 2026

Apache-2.0Sep 15, 2026 · metrics 2.10.0

npm

69Goodhealth index

arikusi/deepseek-mcp-server

MCP server for DeepSeek V4 (v4-flash, v4-pro, 1M context): chat, reasoning, function calling, thinking mode, cost tracking. deepseek-chat/reasoner aliases supported.

TypeScript★ 24↓ 2,086/moOct 14, 2026

MITOct 14, 2026 · metrics 2.10.0

npm · Maven

69Goodhealth index

sairam0424/Tombstone

Production intelligence layer for feature flags at scale — blast radius gating, circuit-breaker auto-rollback, Merkle-linked audit log, incident correlation, and Knight Capital–style tombstoning. Go + Python + TypeScript polyglot monorepo.

Go · TypeScript · Python★ 0↓ 27/moSep 14, 2026

MITSep 14, 2026 · metrics 2.10.0

Packagist

65Goodhealth index