app:
  name: my-app
  environment: staging
  port: 8080

database:
  host: staging-db.example.com
  port: 5432
  name: staging_db

api:
  base_url: https://staging-api.example.com
  timeout: 8000
  retries: 4

logging:
  level: warn
  format: json
  output: console