# Nodejs Backend Patterns

> Build production-ready Node.js backend services with Express/Fastify, implementing middleware patterns, error handling, authentication, database integration, and API design best practices. Use when creating Node.js servers, REST APIs, GraphQL backends, or microservices architectures.

Source: https://skillsagentes.com/skills/wshobson/agents/nodejs-backend-patterns
Repository: https://github.com/wshobson/agents
Author: wshobson
License: MIT
Updated: hace 2 meses
Context cost: 71 tok installed, 499 tok once triggered, 6.6k tok with every bundled file
Bundle: 3 files, 26 KB
Permissions requested: none declared

## Install

```bash
npx -y skills add wshobson/agents --skill nodejs-backend-patterns --agent claude-code
```

## What it does

- Guía para construir servicios backend en Node.js con Express/Fastify
- Cubre middleware, manejo de errores, autenticación e integración con bases de datos
- Incluye patrones para diseño de APIs REST y GraphQL
- Aporta buenas prácticas: TypeScript, validación con Zod/Joi, logging estructurado, rate limiting

## Use it when

- Construir APIs REST o servidores GraphQL
- Crear microservicios con Node.js
- Implementar autenticación y autorización
- Diseñar arquitecturas backend escalables

## What triggers it

- "Ayúdame a diseñar una API REST en Node.js con Express"
- "Necesito implementar autenticación en mi backend de Node.js"
- "Cómo estructuro middleware y manejo de errores en Fastify"

## Before you install

- Requiere conocimientos de Node.js y frameworks como Express o Fastify; detalles ampliados en references/details.md.

## Files

- SKILL.md — 2 KB
- references/advanced-patterns.md — 9 KB
- references/details.md — 15 KB

## SKILL.md

Reproduced verbatim from wshobson/agents under MIT. This section is the upstream document and is in English.

# Node.js Backend Patterns

Comprehensive guidance for building scalable, maintainable, and production-ready Node.js backend applications with modern frameworks, architectural patterns, and best practices.

## When to Use This Skill

- Building REST APIs or GraphQL servers
- Creating microservices with Node.js
- Implementing authentication and authorization
- Designing scalable backend architectures
- Setting up middleware and error handling
- Integrating databases (SQL and NoSQL)
- Building real-time applications with WebSockets
- Implementing background job processing

## Detailed patterns and worked examples

Detailed pattern documentation lives in `references/details.md`. Read that file when the navigation tier above is insufficient.

## Best Practices

1. **Use TypeScript**: Type safety prevents runtime errors
2. **Implement proper error handling**: Use custom error classes
3. **Validate input**: Use libraries like Zod or Joi
4. **Use environment variables**: Never hardcode secrets
5. **Implement logging**: Use structured logging (Pino, Winston)
6. **Add rate limiting**: Prevent abuse
7. **Use HTTPS**: Always in production
8. **Implement CORS properly**: Don't use `*` in production
9. **Use dependency injection**: Easier testing and maintenance
10. **Write tests**: Unit, integration, and E2E tests
11. **Handle graceful shutdown**: Clean up resources
12. **Use connection pooling**: For databases
13. **Implement health checks**: For monitoring
14. **Use compression**: Reduce response size
15. **Monitor performance**: Use APM tools

## Testing Patterns

See `javascript-testing-patterns` skill for comprehensive testing guidance.

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Skills Agentes — https://skillsagentes.com/skills/wshobson/agents/nodejs-backend-patterns