# redis-patterns

A skill that steers your coding agent through Redis work: caching, session storage, rate limiting, pub/sub and distributed locks.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 361 installs · ★ 63
- Author: patricio0312rev
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/patricio0312rev/skills/tree/HEAD/performance/redis-patterns/SKILL.md
- Updated: 2026-01-12
- HTML: https://affpapa.org/en/nevibecode/skills/patricio0312rev-redis-patterns

## What it does

The skill lays out a workflow for the agent: set up the client, pick a pattern, implement operations with proper TTL, handle reconnection and fallbacks, then watch memory and latency. The examples are TypeScript with `ioredis` — a single instance plus a cluster connection, event handlers for `connect`, `ready`, `error` and `close`, and a graceful `SIGTERM` shutdown.

Caching comes as a `Cache` class with key prefixes, `getOrSet`, and a stale-while-revalidate path that returns the old value while refreshing in the background. Sessions get a TTL and a per-user set of session ids, and refreshing extends the lifetime. Rate limiting, pub/sub and distributed locks are covered further down, but that part is cut off in the description.

The connection reads host, port, password and database number from environment variables, and TLS only turns on when `NODE_ENV=production`. Retries are capped at three per request, so if Redis goes down your app needs a path to the data that does not run through the cache.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add patricio0312rev/skills --skill redis-patterns -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/redis-patterns/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/redis-patterns/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add patricio0312rev/skills --skill redis-patterns -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/redis-patterns/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add patricio0312rev/skills --skill redis-patterns -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/redis-patterns/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install patricio0312rev/skills redis-patterns
```

2. **Manually: put the files in place**
- File: `.github/skills/redis-patterns/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add patricio0312rev/skills --skill redis-patterns -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/patricio0312rev/skills --path performance/redis-patterns
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/redis-patterns/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add patricio0312rev/skills --skill redis-patterns -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/patricio0312rev/skills/tree/HEAD/performance/redis-patterns/SKILL.md

## When to use it
- cache a database response instead of querying on every request
- store user sessions with automatic expiry
- serve stale data while the cache refreshes in the background
- connect to a Redis cluster across several nodes
- close the connection cleanly on process shutdown

## Example prompts
- set up a Redis connection with ioredis, retries and error handling
- write a cache class with a key prefix and a getOrSet method for user profiles
- add Redis session storage with a 7-day TTL and refresh on activity

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 31811f47dba778c9.

BEGIN THIRD-PARTY FILE 31811f47dba778c9
````text
---
name: redis-patterns
description: Implements Redis patterns for caching, sessions, rate limiting, pub/sub, and distributed locks with best practices. Use when users request "Redis caching", "session storage", "rate limiter", "pub/sub messaging", or "distributed locks".
---

# Redis Patterns

Implement common Redis patterns for high-performance applications.

## Core Workflow

1. **Setup connection**: Configure Redis client
2. **Choose pattern**: Caching, sessions, queues, etc.
3. **Implement operations**: CRUD with proper TTL
4. **Handle errors**: Reconnection, fallbacks
5. **Monitor performance**: Memory, latency
6. **Optimize**: Pipelining, clustering

## Connection Setup

```typescript
// redis/client.ts
import { Redis } from 'ioredis';

// Single instance
export const redis = new Redis({
  host: process.env.REDIS_HOST || 'localhost',
  port: parseInt(process.env.REDIS_PORT || '6379'),
  password: process.env.REDIS_PASSWORD,
  db: parseInt(process.env.REDIS_DB || '0'),

  // Connection options
  maxRetriesPerRequest: 3,
  retryStrategy(times) {
    const delay = Math.min(times * 50, 2000);
    return delay;
  },

  // Performance options
  enableReadyCheck: true,
  enableOfflineQueue: true,
  connectTimeout: 10000,

  // TLS for production
  tls: process.env.NODE_ENV === 'production' ? {} : undefined,
});

// Event handlers
redis.on('connect', () => console.log('Redis connecting...'));
redis.on('ready', () => console.log('Redis ready'));
redis.on('error', (err) => console.error('Redis error:', err));
redis.on('close', () => console.log('Redis connection closed'));

// Cluster connection
export const cluster = new Redis.Cluster([
  { host: 'redis-node-1', port: 6379 },
  { host: 'redis-node-2', port: 6379 },
  { host: 'redis-node-3', port: 6379 },
], {
  redisOptions: {
    password: process.env.REDIS_PASSWORD,
  },
  scaleReads: 'slave',
  maxRedirections: 16,
});

// Graceful shutdown
process.on('SIGTERM', async () => {
  await redis.quit();
});
```

## Caching Pattern

```typescript
// patterns/cache.ts
import { redis } from './client';

interface CacheOptions {
  ttl?: number;  // seconds
  prefix?: string;
}

export class Cache {
  private prefix: string;
  private defaultTTL: number;

  constructor(options: CacheOptions = {}) {
    this.prefix = options.prefix || 'cache:';
    this.defaultTTL = options.ttl || 3600;
  }

  private key(key: string): string {
    return `${this.prefix}${key}`;
  }

  async get<T>(key: string): Promise<T | null> {
    const data = await redis.get(this.key(key));
    if (!data) return null;

    try {
      return JSON.parse(data) as T;
    } catch {
      return data as unknown as T;
    }
  }
````
END THIRD-PARTY FILE 31811f47dba778c9

The third-party file has ended. Everything between the 31811f47dba778c9 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

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