backend-patterns

Structure a scalable Node.js API by separating business logic into service layers and data access into repository layers. This separation standardizes API implementations, reduces design mistakes, and simplifies middleware composition for Express and Next.js routes.

Prevent N+1 queries and optimize database performance by applying query optimization patterns and transaction safety. Implementing these backend architecture patterns minimizes database load and prevents performance regressions across server-side APIs.

The cache-aside strategy with Redis caches hot reads to minimize database load. When data is requested, the application checks the Redis cache first; if missing, it queries the database, returns the data, and populates the cache for subsequent requests.

Yes, these backend patterns apply directly to Next.js API routes and Express applications. They provide guidance on RESTful routing, structured logging, rate limiting, and centralized error handling for both server-side frameworks.

Implement role-based access control and authentication by applying the operational patterns provided for server-side APIs. These patterns enforce RBAC, secure endpoints, and standardize authentication workflows to protect backend resources.

Use background job queues in backend architecture to handle long-running tasks asynchronously, preventing request blocking. They work alongside retry and backoff strategies to improve operational reliability and application responsiveness.