golang-samber-do

To set up dependency injection in Go with samber/do, create a container using do.New, register dependencies via do.Provide inside modular do.Package blocks, and invoke services from the composition root using do.MustInvoke. This replaces manual constructor wiring with centralized, type-safe service registration.

Managing service lifecycles in a Go service container involves using lazy (default), eager, and transient registrations. Lazy delays instantiation until invoked, eager initializes at startup, and transient creates new instances per request, matching specific startup and per-request behaviors.

Implement graceful shutdown and health checks in Go applications by integrating do.HealthCheck and injector.ShutdownOnSignalsWithContext from samber/do. Services needing cleanup must implement standard Shutdown and HealthCheck interfaces to ensure proper lifecycle management across server operations.

Yes, samber/do supports scoped dependencies for per-request state in Go. You can use do.Scope to isolate per-request state within the dependency injection container, ensuring that transient or scoped services do not leak data across concurrent server requests.

You use a dependency injection container instead of manual constructor wiring in Go to eliminate brittle, hardcoded dependencies. Centralizing service registration via providers ensures failures are handled where they occur, making complex Go applications start correctly and significantly easier to test.

Yes, you can organize Go dependency registrations into modular packages with samber/do. Using the do.Package function allows you to group related service registrations into cohesive modules, keeping your composition root clean and maintaining strict structural organization across large applications.