configuration

Name configuration

Configuration should, as a rule, nest objects rather than use underscores. For example, given the configuration that sets where "state" is stored, it should be something like:

state:
  redis:
    address: "..."
    password: "..."
    database: "..."

Try and avoid underscores (e.g. use "redis.address" and not "redis_address")

Consume Configuration

Configuration parameters should be accessible via:

1. Command Line Flag: Use dot notation to match file structure (e.g., --slack.api.key="abcde").
2. Environment Variable: With a prefix (e.g., ANNOUNCE_SLACK_API_KEY="abcde").
3. File: See below.

Use spf13/viper for implementation.

Store Configuration Files

Store configuration in a path that follows the XDG standards. Use ardg/xdg for finding or writing to those files.