Go Modules Cheat Sheet

Last Updated: November 21, 2025

Core Files

File	Role
`go.mod`	Declare module path + dependencies
`go.sum`	Lock dependency checksums
`vendor/`	Optional directory for vendored code


         go mod tidy

Clean unused requirements


         go get example.com@v1.2.3

Pin a dependency


         go mod vendor

Generate vendor directory

Use `/v2` import paths for breaking changes and tag Git releases to align with `go get`.

💡 Pro Tip: Keep `replace` directives local to dev and tidy modules before releases.