go-graceful-shutdown

Graceful shutdown in a Go microservice involves catching OS signals like SIGTERM to initiate termination, allowing in-flight gRPC requests to drain, and closing database connections sequentially. This prevents data loss and abruptly terminated user requests during Kubernetes deployments.

Signal handling catches OS interrupts like SIGTERM and SIGINT to trigger the shutdown sequence. It stops accepting new requests while allowing in-flight gRPC requests to complete within a configurable timeout before forcefully terminating the process.

Yes, you can configure a specific timeout duration for the shutdown process. This ensures background workers stop and database connections close safely within your defined time limit, balancing operational stability with deployment speed.

Managing dependency ordering requires registering components carefully to ensure sequential and safe termination. This approach stops background workers and closes database connections in the correct dependency order, avoiding premature resource cleanup.

No, Kubernetes is not strictly required, though this approach applies to production Go microservices requiring robust deployment stability. The signal handling and resource cleanup mechanisms work for any environment sending OS signals like SIGTERM or SIGINT.

Dropped connections occur if the configurable timeout is too short or components are not registered in the correct dependency order. You must ensure in-flight gRPC requests drain completely and background workers stop sequentially within the timeout limit.