go-resilience

When to Use

• Service calls external providers (FCM, SendGrid, Twilio, Flow.cl)
• Need to handle transient failures gracefully
• Want to prevent cascading failures when a dependency is down
• Configuring timeouts at HTTP, database, and external call levels
• Testing that the service degrades gracefully under failure

Critical Patterns

The Three Pillars

Every external call should be wrapped with these three patterns, in order:

Request → Timeout → Retry (with backoff) → Circuit Breaker → External Service