Backend Development Patterns

Backend architecture patterns and best practices for scalable server-side applications using Node.js, Express, and Next.js API routes.

When to Apply

Use these patterns when:

• Building REST APIs with Express or Next.js API routes
• Designing data access layers (Repository, Service patterns)
• Implementing authentication, authorization, or rate limiting
• Optimizing database queries (N+1 prevention, caching)
• Adding error handling, retries, logging, or background jobs
• Reviewing backend code for architectural consistency

Quick Reference