How to Diagnose a Website That Returns a 502 Only for Certain API Routes

A route-specific 502 can indicate an upstream timeout, worker exhaustion, proxy mapping issue, or dependency unavailable only for that handler.

Checks to make

Compare successful and failing paths, request IDs, upstream timing, and application worker logs. Check route-specific proxy timeouts and payload size, then validate the dependency directly without broadly increasing timeout limits.

When to get help

Hosting support can trace route-specific upstream failures. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.