Fx¶

Fx is a dependency injection system for Go.

Eliminate globals

By using Fx-managed singletons, you can eliminate global state from your application. With Fx, you don't have to rely on init() functions for setup, instead relying on Fx to manage the lifecycle of your application.
Reduce boilerplate

Fx reduces the amount of code copy-pasted across your services. It lets you define shared application setup in a single place, and then reuse it across all your services.
Automatic plumbing

Fx automatically constructs your application's dependency graph. A component added to the application can be used by any other component without any additional configuration.

Learn more about the dependency container
Code reuse

Fx lets teams within your organization build loosely-coupled and well-integrated shareable components referred to as modules.

Learn more about modules
Battle-tested

Fx is the backbone of nearly all Go services at Uber.