afex/hystrix-go
Hystrix Go
This is a fault tolerance library for Go designed to prevent cascading failures by isolating unhealthy remote services using the circuit breaker pattern. It serves as a resilience tool for managing request timeouts, defining fallback logic, and protecting remote systems from overloading.
The library differentiates itself through the integration of a health metrics exporter that streams real-time performance and status data of remote connections to external monitoring tools. It combines this observability with a circuit breaker state machine that tracks success and failure rates to block calls to unresponsive services.
The project covers a broad range of traffic management and stability capabilities, including concurrent request limiting to prevent resource exhaustion and the execution of alternative logic paths when primary services fail. It also provides mechanisms for service latency management and the aggregation of request counts and latencies.
Features
- Cascading Failure Preventions - Prevents failures in one service from triggering a domino effect across the system using the circuit breaker pattern.
- Resilience and Fault Tolerance - Provides a library of resilience patterns and fault-tolerance tools for building stable Go services.
- Circuit Breakers - Blocks requests to unhealthy remote services by monitoring failure rates to prevent cascading failures.
- Fault-Tolerant Fallbacks - Provides logic to return default or stubbed responses when a primary remote service call fails or times out.
- Fault Tolerance Implementation - Implements design patterns that ensure system continuity and prevent a single dependency failure from crashing the application.
- Request Timeout Management - Enforces strict maximum durations for remote calls using timers to trigger failure states and maintain responsiveness.
- Service Latency Controls - Controls the maximum wait time for remote responses to maintain a responsive user experience.
- Circuit Breaking States - Implements a state machine to manage service availability states like closed, open, and half-open based on failure rates.
- Service Call Fallbacks - Provides a secondary logic path to execute when the primary remote service is unavailable or times out.
- Request Isolation - Uses separate goroutines to isolate remote calls, preventing a single slow service from blocking the entire system.
- Concurrency Semaphores - Uses counting semaphores to limit the number of simultaneous active requests to prevent resource exhaustion.
- Service Overload Protections - Implements active resilience patterns like circuit breakers and rate limiters to protect remote systems from overloading.
- Concurrent Request Limits - Restricts the absolute number of simultaneous active requests to ensure system stability.
- External Service Monitoring - Tracks the health and performance of third-party API dependencies through real-time metrics.
- Metrics Exports - Aggregates internal request counts and latencies for export to external monitoring tools.
- Service Health Metrics Streaming - Streams real-time latency, error rates, and circuit states to external monitoring dashboards.
- General Utilities - Hystrix-style fallback and circuit breaking.
- General Utility Libraries - Implementation of Hystrix-style fallback mechanisms.
Star history
How this analysis was created: This summary and feature list were written by an AI model that read the project's README and public documentation pages. Each feature links to the documentation it came from; stars, license and language come straight from the GitHub API. The model does not read the source code, and the analysis is refreshed when the project is re-analysed. Learn more on our About page.
