Go API Project Guide

Complete observability rollout for Go HTTP APIs

Use this guide for Go APIs where low latency and predictable resource usage are important.

Architecture Scope

  • HTTP middleware and handlers.
  • Service/domain packages.
  • DB and outbound client boundaries.
  1. Initialize SDK once at process start.
  2. Instrument middleware for request timing/status.
  3. Add spans around DB/outbound calls.
  4. Flush gracefully on SIGTERM.

Minimum Data Contract

  • service, env, version in all key events.
  • Request correlation IDs propagated through handlers.
  • Error events with operation context.

Validation Checklist

  • Synthetic load emits stable telemetry.
  • Slow handlers appear clearly in spans.
  • Shutdown path flushes final queue.

Production Hardening

  1. Keep queues bounded to avoid memory pressure.
  2. Monitor ingest errors and retries.
  3. Validate instrumentation after router/middleware changes.

Troubleshooting

  • Missing data under load: tune buffering/retry and inspect backpressure.
  • Missing spans: instrument all I/O boundaries.
  • Inconsistent tags: enforce shared middleware decorators.

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