backend-patterns

Design scalable REST and GraphQL backend APIs with validation and error handling.

2|Updated Jul 1, 2026
One-click install
npx skills add https://github.com/CDO-07-New/TF4-AIO-03-foresight-lens-final --skill backend-patterns-cdo-07-new
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: backend-patterns
Source: https://github.com/CDO-07-New/TF4-AIO-03-foresight-lens-final/tree/main/.agents/skills/backend-patterns
Command: npx skills add https://github.com/CDO-07-New/TF4-AIO-03-foresight-lens-final --skill backend-patterns-cdo-07-new

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps you design maintainable backend systems when you need clean API structure, reliable data access, and predictable server-side behavior without reinventing common patterns.

Core Features & Use Cases

  • API design: Plan REST or GraphQL endpoints with resource-oriented routes and validation.
  • Data access: Structure repository and service layers to avoid N+1 queries and keep logic testable.
  • Reliability patterns: Apply caching, authentication, authorization, rate limiting, background jobs, error handling, and structured logging in production backends.
  • Use case: Use it to shape a Next.js API route that fetches filtered records, protects access with JWTs, and returns consistent error responses.

Quick Start

Use the backend-patterns skill to design a secure Next.js API endpoint with repository and service layers, validation, and structured error handling.

Frequently Asked Questions about backend-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I structure a scalable backend API in Node.js and Express?

Structure scalable backend APIs by separating logic into repository and service layers, applying centralized error handling and validation. This maintainable pattern keeps server-side request handling predictable and testable for Node.js and Express applications.

What's the best way to prevent N+1 queries in a Next.js API route?

Prevent N+1 queries in Next.js API routes by using a repository layer for data access and batching database requests. This architectural pattern ensures optimized database queries and keeps business logic cleanly separated from endpoint routing.

How do I add JWT authentication and rate limiting to REST endpoints?

Add JWT authentication and rate limiting to REST endpoints by implementing them as reliability patterns within your service layer. This secures access to backend resources and protects server-side endpoints from abuse alongside structured logging.

Does this approach work for both REST and GraphQL endpoint design?

Yes, this approach works for both REST and GraphQL endpoint design. It applies resource-oriented routes and validation to structure endpoints, ensuring reliable data access and maintainable server-side behavior across different API paradigms.

When do I need centralized error handling and structured logging in backend systems?

You need centralized error handling and structured logging in backend systems when designing production-ready APIs. These reliability patterns ensure consistent error responses and predictable server-side behavior during background jobs and data fetching operations.

Can I use repository and service layers for caching and background jobs?

Yes, you can use repository and service layers to implement caching and background jobs. Structuring data access this way avoids N+1 queries and keeps these reliability patterns testable and maintainable within your backend architecture.