Code Wrench

Dec 27, 2025 · Backend Development

Mastering Go Dependency Injection: Manual vs Google Wire Explained

This article examines the challenges of tangled initialization in Go's main.go, demonstrates a manual DI container for an order service, and contrasts it with Google’s compile‑time wire tool for a user service, offering practical code examples, step‑by‑step guidance, and recommendations for projects of different sizes.