Choose monorepo for shared code and atomic updates, or multi-repo for independent deployment and access control in Go projects.
Use a monorepo for shared code and atomic updates, or a multi-repo setup for independent deployment and access control. Go modules support both via go.mod files in each directory. For a monorepo, define separate modules in subdirectories:
module github.com/org/project/service-a
go 1.21
require github.com/org/project/shared v0.0.0
For a multi-repo setup, each repository contains its own go.mod and imports others via public URLs.
A monorepo keeps all your code in one place, making it easy to share code and update everything at once. A multi-repo setup splits code into separate folders, allowing teams to work independently and deploy changes without affecting others. Think of a monorepo as a single library book with all chapters, while multi-repo is like separate books on different shelves.