Configuration

This placeholder guide shows how a longer reference page looks, with a YAML example and a settings table.

Configuration file

Settings live in a config.yaml file at the root of your project:

server:
  host: 0.0.0.0
  port: 8080
logging:
  level: info
  format: json
features:
  - search
  - analytics

Environment variables

Any value in the configuration file can be overridden with an environment variable. The variable name is the uppercased, underscore-joined path — for example, server.port becomes SERVER_PORT.

Precedence

Configuration is resolved in the following order, where later sources win:

PrioritySourceNotes
1Built-in defaultsAlways present.
2config.yamlChecked into source control.
3Environment variablesBest for secrets and per-host values.

Validation

The configuration is validated on startup. If a required field is missing or a value has the wrong type, the process exits with a non-zero status and prints the offending field path.

Next steps

With configuration in place, continue to the Deployment guide.