backend-patterns

Implement repository, service, and middleware patterns for Node.js and Express APIs.

1|Updated Apr 6, 2026
One-click install
npx skills add https://github.com/vrcms/everything-qwen-code --skill backend-patterns-vrcms
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: backend-patterns
Source: https://github.com/vrcms/everything-qwen-code/tree/main/.qwen/skills/backend-patterns
Command: npx skills add https://github.com/vrcms/everything-qwen-code --skill backend-patterns-vrcms

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill addresses the complexity of building maintainable server-side applications by providing standardized patterns for API design, data access, and error handling.

Core Features & Use Cases

  • Architectural Patterns: Implements Repository, Service, and Middleware layers to decouple business logic from data access.
  • API & Database Optimization: Provides best practices for RESTful design, N+1 query prevention, and efficient caching strategies.
  • Security & Reliability: Includes robust patterns for JWT authentication, role-based access control, rate limiting, and centralized error handling.

Quick Start

Use the backend-patterns skill to refactor my current API route to implement the repository pattern and add centralized 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 decouple business logic from data access in a Node.js API?

Implement repository and service layers to decouple business logic from data access in a Node.js API. This architectural pattern separates data retrieval operations from business rules, ensuring maintainable and scalable server-side application architecture.

What is the best way to structure authentication and rate limiting in Express?

Structure authentication and rate limiting in Express using standardized middleware layers. This approach ensures secure JWT authentication, role-based access control, and resilient request throttling across all defined API endpoints.

How do I prevent N+1 query problems when designing RESTful APIs?

Prevent N+1 query problems in RESTful APIs by applying efficient caching strategies and optimized data access patterns. Implementing the repository pattern facilitates high-performance data retrieval and prevents redundant database fetches.

How do I implement centralized error handling for Next.js API routes?

Implement centralized error handling for Next.js API routes by integrating standardized middleware layers. This ensures resilient error management across endpoints by catching exceptions uniformly and decoupling error responses from business logic.

Does this backend architecture approach work for both Express and Next.js frameworks?

Yes, this backend architecture approach works for both Express and Next.js frameworks. Standardized repository, service, and middleware design patterns facilitate scalable server-side application development across both Node.js environments.