[best] - .env.go.local

: Never leave your teammates guessing. If you add a variable to .env.go.local , add a placeholder version of it to a .env.example file so others know what they need to configure.

While a standard .env file might contain default values shared by the whole team, .env.go.local is designed to: defaults for your specific local setup. .env.go.local

Before you even create the file, ensure your local overrides stay local. Add this to your .gitignore : # Ignore local Go environment overrides *.go.local Use code with caution. Step 2: Choose a Loader : Never leave your teammates guessing