nodejs-backend-patterns

Provide structured Node.js backend patterns for Express and Fastify.

Updated May 28, 2026
One-click install
npx skills add https://github.com/7Lemaitre7/xp-prj --skill nodejs-backend-patterns-7lemaitre7
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: nodejs-backend-patterns
Source: https://github.com/7Lemaitre7/xp-prj/tree/main/.agents/skills/nodejs-backend-patterns
Command: npx skills add https://github.com/7Lemaitre7/xp-prj --skill nodejs-backend-patterns-7lemaitre7

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Node.js backend patterns provide structured guidance to build scalable, maintainable server-side applications using Express or Fastify, covering middleware, error handling, authentication, database integration, and API design best practices.

Core Features & Use Cases

  • Architectural patterns for layered structure (controllers, services, repositories, models)
  • Middleware strategies for authentication, validation, rate limiting, and logging
  • Database integration examples for PostgreSQL and MongoDB with transaction support
  • API design best practices including typed routes, validation, and typed responses
  • Use Case: Build a REST/GraphQL backend with authentication and data validation

Quick Start

Initialize a new Node.js backend project by scaffolding the standard folders, wiring the DI container, and wiring Express/Fastify with a sample route.

Frequently Asked Questions about nodejs-backend-patterns

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

FAQPage Schema
How do I structure a scalable Node.js backend with Express or Fastify?

Structure scalable Node.js backends using layered architecture patterns like controllers, services, and repositories to separate concerns. This enforces maintainable code by decoupling routing from business logic and database integration.

What is the best way to handle authentication and validation in Node.js middleware?

Handle authentication and validation in Node.js middleware by implementing structured strategies for rate limiting and logging. This ensures incoming requests are verified and sanitized before reaching core business logic.

Can I use dependency injection to manage database transactions in Node.js?

Yes, use dependency injection to manage database transactions in Node.js. Wiring a DI container allows decoupled repository layers to handle PostgreSQL and MongoDB transaction support cleanly across services.

Does this Node.js backend pattern support microservices and GraphQL API design?

Yes, the Node.js backend patterns support API design across REST, GraphQL, and microservices scenarios. They enforce typed routes and typed responses to ensure robust communication between distributed services.

Why does my Node.js API require robust error handling and structured architecture?

Your Node.js API requires robust error handling and structured architecture to prevent unhandled promise rejections and crashes. Enforcing strict boundaries ensures predictable failure modes and maintainable backend code.