backend-dev-guidelines

Structure Node.js Express microservices using a layered architecture that separates routes, controllers, services, and repositories to enforce boundaries and improve maintainability.

Standardize backend development by applying a reusable playbook that enforces consistent coding conventions, validation patterns, and DTOs, reducing duplicated effort and brittle services across teams.

Integrate Sentry for error handling by applying standardized middleware and monitoring patterns within your Express routes to achieve consistent observability across your microservices.

Implement validation patterns and DTOs in Express by applying standardized templates that enforce data integrity at the controller boundary before processing business logic in services.

Use standardized testing strategies and templates for unit and integration tests to validate the routes, controllers, services, and repositories within your Node.js microservices architecture.

The architecture guidance applies to both initializing new backend projects and refactoring existing Express applications by applying standardized layered templates and reusable middleware patterns.