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REST API integration checklist for production frontends
Timeouts, idempotency keys, error models, and versioning—what to verify before launch.
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restintegrationchecklist
Contract basics
Pin OpenAPI or a schema for request/response shapes. Breaking changes belong behind versioned paths or feature flags.
Document error codes and retry rules so UI teams do not guess from status text alone.
Runtime behavior
Set sane timeouts and cancellation for in-flight fetches when users navigate away.
Propagate correlation IDs through proxies to trace a user complaint to server logs.