Nodejs Patterns

# Nodejs Patterns

WHAT: Production-ready Node.js backend patterns - Express/Fastify setup, layered architecture, 
middleware, error handling, validation, database integration, authentication, and caching.

WHEN: User is building REST APIs, setting up Node.js servers, implementing authentication, 
integrating databases, adding validation/caching, or structuring backend applications.

KEYWORDS: nodejs, node, express, fastify, typescript, api, rest, middleware, authentication, 
jwt, validation, zod, postgres, mongodb, redis, caching, rate limiting, error handling

## Discovery Metadata
- Category: `data`
- Framework: `ClawHub`
- Tags: `node`, `validation`, `authentication`, `caching`, `nodejs`, `patterns`, `backend`, `express`, `fastify`, `middleware`

## Agent Execution Policy

This listing is **discovery metadata only**. Canonical instructions are maintained by ClawHub.

### Before Executing Actions

1. **Fetch canonical instructions** from: https://clawhub.ai/skill/nodejs-patterns
2. **Parse the skill page** for setup, usage, and input/output requirements.
3. **Only proceed** after successfully loading and understanding the full instructions.

### If Fetch Fails

- Return `instruction_unavailable` with reason.
- Do **not** attempt to infer or improvise execution steps from this metadata alone.

## Source

- ClawHub listing: https://clawhub.ai/skill/nodejs-patterns