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.