backend-patterns

Apply repository and service layer patterns to separate data access from business logic in your Node.js REST API. This enforces consistency, improves testability, and maintains maintainability across Express and Next.js projects.

Implement centralized error handling in Express using dedicated middleware patterns. This unifies error responses across all routes, preventing scattered try-catch blocks and ensuring consistent API behavior during failures.

Use the repository pattern when you need to separate data access logic from business rules in Node.js applications. It enables better testability and allows you to retrofit existing Express APIs for improved maintainability and scalability.

Yes, these backend patterns work with Next.js API routes. They provide reusable TypeScript patterns and code snippets designed to be dropped into both Express and Next.js projects to enforce architectural consistency.

Add authentication and caching to Express APIs through dedicated middleware patterns. These patterns handle request validation, token authentication, and database optimization strategies to improve overall performance.

Retrofit an Express API by running a refactor iteration to align existing endpoints with repository and service layer patterns. Adapt the provided TypeScript patterns to your data models and apply centralized error handling across routes.