gojek/heimdall

Health v2 · maintenance only

Adoption not part of the score

2774 stars · 207 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Heimdall is an enhanced HTTP client library for Go that wraps the standard net/http client with resilience features. It provides hystrix-like circuit breakers, configurable synchronous retries with custom backoff strategies, and per-request timeouts via a fluent interface.

Use cases

• make http requests with automatic retries and backoff in go
• add a circuit breaker to outbound http calls
• prevent cascading failures when calling flaky downstream services
• set per-request timeouts on an http client
• implement custom retry strategies for http requests
• build resilient microservice-to-microservice communication

When to choose

• you need retries, backoff, or circuit breaking around Go http calls
• you want a drop-in enhanced client over net/http with a fluent API
• you need per-request timeout control in a high-volume service

When to avoid

• you only need simple one-off http requests without resilience features
• you need async or distributed retries rather than in-memory synchronous ones
• your project is not written in Go

Facets

library · maturity stable

http-client middleware backend microservices developer-tools go circuit-breaker retries backoff hystrix resilience fluent-interface

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