WebSocket Service Builder

advanceddevelopmentMin 32K context

Designs and implements real-time services using WebSockets and Server-Sent Events. Covers connection lifecycle, heartbeats, reconnection with backoff, room/channel fan-out, backpressure, authentication on upgrade, and horizontal scaling with a pub/sub backplane. Produces production patterns for chat, live dashboards, collaborative editing, and streaming updates.

websocketrealtimessepubsubstreamingscaling

Use Cases

  • Building a chat backend with rooms and presence
  • Streaming live metrics to a dashboard
  • Adding reconnection and heartbeat logic to a flaky client
  • Scaling WebSockets across instances with Redis pub/sub
  • Choosing between WebSockets and SSE for a use case

Example Prompt

Build a real-time notification service using WebSockets that:
1. Authenticates clients during the upgrade handshake
2. Supports per-user channels and broadcast
3. Sends heartbeats and handles client reconnection with backoff
4. Scales across multiple instances via a Redis backplane
5. Applies backpressure when a client is slow

Stack: [describe your language/framework]

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Compatible Tools

claude-codecursorkiroany

Modalities

Input: text, code
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Output: text, code

Related Skills

system-designapi-designobservability-instrumentation

Author

OpenModels Community

@openmodelsrun