golang-design-patterns

Implement graceful shutdown in Go services by applying explicit initialization, timeout-aware external calls, and immediate defer for cleanup. This pattern ensures bounded resource pools drain correctly and prevents data loss during termination without relying on hidden init functions.

Apply clean architecture or hexagonal architecture in Go when you need pure domain boundaries without unnecessary abstraction. Choose these patterns to keep code testable and production-ready, ensuring domain-friendly layering and explicit separation between external concerns and core logic.

The best way to handle resource management in Go is using bounded pools with explicit initialization and immediate defer for cleanup. This approach prevents resource leaks, maintains simple code structure, and ensures production-ready behavior under high concurrency without over-engineering.

Structure Go error flow by handling errors early and avoiding init functions entirely. Prefer explicit initialization and validated constructors over hidden magic, ensuring that error paths are visible, testable, and maintain predictable behavior throughout the service lifecycle.

You do not need clean architecture for simple Go APIs if it introduces unnecessary abstraction. Select the smallest correct pattern for the problem, preferring explicit defaults and pure domain boundaries that maintain testability without over-engineering the service layering.