golang-samber-do

To set up dependency injection in Go using samber/do, you register services at the composition root using provider functions that return (T, error), then invoke them via Invoke or MustInvoke, ensuring type-safe service composition and deterministic wiring.

In Go DI containers, lazy services initialize on first invocation, eager services initialize immediately at registration, and transient services create a new instance per invocation. Choosing the right lifecycle prevents unnecessary work and manages runtime resource allocation.

You manage graceful shutdown and health checks in a Go service container by utilizing samber/do's built-in lifecycle management, which allows services to be properly started and stopped, and by registering health check providers to monitor service availability during runtime.

Yes, you can use scoped initialization for multi-module Go applications. Samber/do supports scopes and packages, allowing you to organize service registrations hierarchically and control dependency resolution across different application boundaries.

To invoke a service as an interface when the provider returns a concrete type, you use the InvokeAs function in samber/do. This allows type-safe registration of concrete implementations while resolving them through their expected interfaces at the call site.

You should replace manual constructor wiring with a Go dependency injection container when composing multi-module applications that require consistent lifecycle management, deterministic composition roots, health checks, and graceful shutdown behavior to ensure reliable startup and shutdown.