golang-design-patterns

Go functional options replace the builder pattern by allowing constructor APIs to evolve with validation and explicit defaults. This pattern keeps initialization explicit, avoiding package-level init() functions while supporting flexible configuration growth.

Graceful shutdown in Go requires correct cleanup practices like defer placement, bounded timeouts, and safe shutdown sequencing. Implement context-aware retries and explicit dependency wiring to ensure concurrent workloads and external resources release safely during termination.

Early error returns in Go keep the happy path flat by handling failures first. This improves clarity and reliability, ensuring explicit error flow without deep nesting, making production HTTP/gRPC services easier to maintain and debug.

Choose clean, hexagonal, or DDD architecture in Go when applying dependency direction principles to right-size architecture choices. Explicit dependency wiring aligned with the chosen style ensures maintainable boundaries for complex HTTP/gRPC services and background workers.

Manage bounded resource limits and timeouts in Go using correct cleanup patterns like defer placement and runtime.AddCleanup. Apply context-aware retries and explicit limits to prevent resource exhaustion during concurrent workloads in HTTP/gRPC services.

Go services struggle with dependency injection when lacking explicit wiring aligned with the chosen architecture style. Avoid package-level init() functions and use explicit initialization with functional options to ensure clear, testable dependency boundaries during refactoring.