backend-patterns

Apply backend architecture patterns to design scalable Node.js APIs.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/yulong-me/Xrunner --skill backend-patterns-yulong-me
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: backend-patterns
Source: https://github.com/yulong-me/Xrunner/tree/main/.agent/skills/backend-patterns
Command: npx skills add https://github.com/yulong-me/Xrunner --skill backend-patterns-yulong-me

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Backend architecture patterns, API design, and database optimization for building scalable server-side applications with Node.js, Express, and Next.js.

Core Features & Use Cases

  • API design patterns (RESTful structure, repository layer, service layer, and middleware) to create modular, testable backends.
  • Database optimization and patterns such as query optimization, N+1 prevention, transactions, caching strategies, and robust error handling.
  • Authentication, authorization, rate limiting, background jobs, and logging/monitoring to ensure secure, reliable APIs across production-grade projects.
  • Use cases span small prototypes to large-scale services, including REST APIs, data access layers, and maintainable backend architectures in Node.js ecosystems.

Quick Start

Install and review the included patterns to begin integrating proven backend patterns into your Node.js projects.

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 Node.js API with Express and Next.js backends?

Structure scalable Node.js APIs by applying repository and service layer patterns to separate data access from business logic. This approach ensures modularity, testability, and maintainability across RESTful services in Express and Next.js backends.

What is the best way to prevent N+1 query issues in Node.js database optimization?

Prevent N+1 query issues in Node.js database optimization by applying specific repository layer patterns that batch or eagerly fetch related data. This Skill provides concrete query optimization strategies to resolve these performance bottlenecks.

How does the repository layer pattern work for backend API design?

The repository layer pattern works by abstracting data access operations into dedicated modules, isolating service layers from direct database queries. This backend pattern creates modular, testable APIs by centralizing database interactions.

Can I use these backend patterns for authentication and rate limiting in Next.js?

Yes, you can use these backend patterns for authentication and rate limiting in Next.js. The Skill applies established architecture patterns to secure server-side systems, covering authorization flows and middleware across Node.js ecosystems.

When do I need a service layer in my Node.js REST API?

You need a service layer in your Node.js REST API when separating business logic from route handlers and data access. This backend pattern ensures modularity and testability as your server-side application scales.