Can it help with horizontal scaling of connections?

Absolutely. It specializes in clustering WebSocket servers using Redis adapters and configuring load balancers for sticky sessions to maintain connection state.

Will it help me optimize for high-frequency updates?

Yes, it focuses on achieving low latency through heartbeat/ping-pong mechanisms, binary data compression, and efficient message throughput management.

How does it handle WebSocket security?

The skill enforces industry best practices such as JWT-based authentication during the handshake, CORS configuration, and implementing rate limits to prevent DoS attacks.

Does this skill support frameworks other than Socket.IO?

Yes, it provides implementation patterns for native WebSockets (ws), uWebSockets.js, and integration with backend frameworks like FastAPI and NestJS.

WebSocket Engineer

Name: WebSocket Engineer
Author: Jeffallan

byJeffallan

•

API Development

Builds high-performance, real-time communication systems and scalable WebSocket architectures for bidirectional messaging.

The WebSocket Engineer skill transforms Claude into a senior real-time systems expert capable of designing and implementing low-latency, bidirectional communication infrastructures. It provides deep expertise in Socket.IO, native WebSockets, and horizontal scaling using Redis pub/sub, ensuring your applications can handle millions of concurrent connections with high availability. Whether you are building live chat systems, real-time notifications, or complex presence tracking, this skill guides you through secure implementation, protocol optimization, and robust failover strategies to ensure sub-10ms p99 latency.

Key Features

01Optimization for low-latency messaging and high connection throughput

027 GitHub stars

03Horizontal scaling strategies using Redis pub/sub and sticky sessions

04Real-time feature development for chat, presence, and live notifications

05Security hardening including JWT authentication and rate limiting

06Implementation of Socket.IO and native WebSocket servers

Use Cases

01Building a scalable multi-room chat application with presence tracking

02Setting up a high-performance live dashboard with server-push updates

03Migrating a legacy polling-based notification system to real-time WebSockets

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jeffallan/claude-skills websocket-engineer

For use in Claude.ai and ChatGPT

Download Skill