feat: migrate metrics to dedicated server#65
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allisson
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Feb 25, 2026
allisson
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- Extract the Prometheus /metrics endpoint into a dedicated HTTP server (MetricsServer) to prevent exposing internal telemetry on the public API port.
- Enhance the /ready endpoint to perform an active database connection check using db.PingContext. It now returns varying HTTP statuses (200 OK or 503 Service Unavailable) and a JSON payload detailing component health.
- Update the main Server constructor to require a *sql.DB dependency for the readiness probe.
- Update application startup and graceful shutdown logic to manage both the main API server and the secondary metrics server.
- Adapt unit and integration tests to accommodate the updated /ready response format and the isolated metrics routing.
Extract the Prometheus /metrics endpoint into a dedicated HTTP server (MetricsServer) to prevent exposing internal telemetry on the public API port. Enhance the /ready endpoint to perform an active database connection check using db.PingContext. It now returns varying HTTP statuses (200 OK or 503 Service Unavailable) and a JSON payload detailing component health. Update the main Server constructor to require a *sql.DB dependency for the readiness probe. Update application startup and graceful shutdown logic to manage both the main API server and the secondary metrics server. Adapt unit and integration tests to accommodate the updated /ready response format and the isolated metrics routing.
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