Golang Example Config

Golang example config by @barluscuda.

About

This project shows a simple way to load application configuration in Go using:

• .env support via github.com/joho/godotenv
• typed config structs
• generic environment value loading with fallbacks

Project Structure

• main.go loads .env, builds the config, and prints the result
• config/ defines env keys, config types, and the config loader
• pkg/envloader/ provides a generic helper for reading environment variables

Environment Variables

The app uses these variables:

• EXAM_APP_SERVER_DEBUG
• EXAM_APP_SERVER_PORT

Example .env:

EXAM_APP_SERVER_DEBUG=true
EXAM_APP_SERVER_PORT=3250

Run

go run .

If .env is missing, the app falls back to system environment variables and default values.

You can also run the app with:

make run

Test

go test ./...

Or:

make test

The test suite covers:

• typed environment parsing for string, int, bool, and time.Duration
• fallback behavior when environment variables are missing or invalid
• config loading from EXAM_APP_SERVER_DEBUG and EXAM_APP_SERVER_PORT

Default Values

• EXAM_APP_SERVER_DEBUG=false
• EXAM_APP_SERVER_PORT=3250

Example Output

config result: {{true 3250}}

License

See LICENSE.