Realtime & sync

PartyKit

A developer-focused platform for building real-time multiplayer apps using Server-Sent Events (SSE) and WebSockets on the edge.

Visit PartyKit Docs

Overview

PartyKit allows developers to write server-side code in JavaScript/TypeScript that runs on the edge (Cloudflare Workers), handling room-based state and pub/sub messaging natively. It simplifies the complexity of WebSockets by providing a simple `room.on` interface for handling connections and broadcasting messages. It is particularly strong for games, chats, and interactive demos where low latency and ease of deployment are critical.

Best for

Multiplayer browser games
Live chat applications
Interactive live demos

Trade-offs

vs Supabase Realtime

PartyKit offers more custom server logic flexibility; Supabase is better if you just want DB changes synced automatically.

What XeroHack pre-wires

When you pick PartyKit in the interview, the engine emits these files into your scaffold:

PartySocket client
Edge room setup
Broadcast message helper

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