service=ttraa-api 5xx spike on ttraa-apisix-gateway. Treat as likely upstream/backend failure. Check Grafana HTTP Status & Latency dashboard, then Cloud Run logs for ttraa-api-app-prod and ttraa-graphql-api-prod. https://console.cloud.google.com/logs/query;query=resource.type%20%3D%20%22cloud_run_revision%22%0Aresource.labels.service_name%20%3D%20%22ttraa-apisix-gateway%22%0Aresource.labels.location%20%3D%20%22europe-west1%22%0A%20severity%3E%3DDEFAULT%0Aseverity%3D%22ERROR%22;storageScope=project;cursorTimestamp=2026-07-06T08:54:15.193828Z;duration=PT12H?authuser=0&project=ttraa-422318&supportedpurview=project&pli=1 https://console.cloud.google.com/logs/query;query=jsonPayload.event%3D%22application_exception_caught%22%0A%2528resource.labels.configuration_name%3D%22ttraa-graphql-api-prod%22%20OR%20resource.labels.configuration_name%3D%22ttraa-api-app-prod%22%2529%0A-jsonPayload.message%3D%22Unauthorized%22%0A-jsonPayload.statusCode%3D%22404%22;summaryFields=jsonPayload%252Fcode:false:32:beginning;cursorTimestamp=2026-07-06T09:00:01.443682Z;duration=PT12H?project=ttraa-422318