application: port: 8000 host: 0.0.0.0 hmac_secret: "super-long-and-secret-random-key-needed-to-verify-message-integrity" database: host: "127.0.0.1" port: 5432 username: "postgres" password: "password" database_name: "newsletter" require_ssl: false email_client: base_url: "localhost" sender_email: "test@gmail.com" authorization_token: "my-secret-token" timeout_milliseconds: 10000 redis_uri: "redis://127.0.0.1:6379"