Always propagate contexts consistently throughout the call chain and handle context cancellation properly in concurrent operations. When a context is available in the current scope, reuse it instead of creating a new background context. For operations that may block (like time.Sleep), use context-aware alternatives to prevent goroutine leaks when requests are cancelled. Example of proper context cancellation handling: ```go // Instead of: time.Sleep(res.Delay) // Use: select { case <-ctx.Done(): return Result{Ok: false}, nil case <-time.After(res.Delay): } ``` This ensures that goroutines don't remain active after their associated request context has been cancelled, preventing resource leaks and improving application responsiveness.