Configuration Documentation

Overview

This document details the various configuration options available for customizing the application's behavior and appearance. Proper configuration is key to tailoring the system to your specific needs.

Configuration settings are typically managed through a configuration file, environment variables, or a combination of both. We will explore the primary methods and parameters below.

Configuration File

The main configuration file is usually located at config.yaml or settings.json in the root directory of the application. You can override these settings using environment variables.

File Format

We support both YAML and JSON formats for configuration files. YAML is generally preferred for its readability.

Example (YAML)


database:
  type: postgresql
  host: localhost
  port: 5432
  username: admin
  password: changeme
  dbname: app_db

server:
  port: 8080
  log_level: info
  timeout_seconds: 30

features:
  enable_user_registration: true
  email_verification: false

Example (JSON)


{
  "database": {
    "type": "postgresql",
    "host": "localhost",
    "port": 5432,
    "username": "admin",
    "password": "changeme",
    "dbname": "app_db"
  },
  "server": {
    "port": 8080,
    "log_level": "info",
    "timeout_seconds": 30
  },
  "features": {
    "enable_user_registration": true,
    "email_verification": false
  }
}

Environment Variables

Environment variables provide a dynamic way to configure your application, especially useful in containerized or cloud environments. Variables are typically prefixed with APP_. For nested configurations, use double underscores (__) to represent nesting levels.

Example Mapping

The following table shows how configuration options from the file map to environment variables:

Configuration Path	Environment Variable	Description
`database.host`	`APP_DATABASE__HOST`	Database server hostname.
`database.port`	`APP_DATABASE__PORT`	Database server port.
`server.port`	`APP_SERVER__PORT`	The port the application will listen on.
`server.log_level`	`APP_SERVER__LOG_LEVEL`	Sets the logging verbosity (e.g., debug, info, warn, error).
`features.enable_user_registration`	`APP_FEATURES__ENABLE_USER_REGISTRATION`	Enables or disables user sign-ups.

Boolean values can be set using true, false, 1, 0, yes, or no.

Key Configuration Groups

Database Configuration

Controls the connection to your data store.

database.type: Type of database (e.g., postgresql, mysql, sqlite).
database.host: Database server address.
database.port: Database server port.
database.username: Username for database authentication.
database.password: Password for database authentication.
database.dbname: The name of the database to connect to.
database.ssl_mode: SSL mode for the connection (e.g., disable, require, verify-ca).

Server Configuration

Defines network and operational parameters for the application server.

server.port: Port the application listens on.
server.host: Hostname or IP address to bind to (e.g., 0.0.0.0 for all interfaces).
server.log_level: Logging verbosity level. Valid values: debug, info, warn, error. Defaults to info.
server.timeout_seconds: Request timeout in seconds.
server.max_connections: Maximum number of concurrent connections.

Feature Flags

Toggle specific features on or off.

features.enable_user_registration: Boolean to control user sign-up functionality.
features.email_verification: Boolean to enable/disable email confirmation for new users.
features.enable_api_keys: Boolean to control API key generation and usage.

Default Values

If a configuration option is not explicitly set, it will fall back to a sensible default value. These defaults are designed for general use and can be overridden.

For a comprehensive list of default values, please refer to the API Reference or inspect the application's source code.

Documentation

Configuration Options