Web App2023
Pulse Chat
Realtime team chat with presence & typing.
A Slack-lite built to stress-test Socket.IO patterns: rooms, presence, read receipts, optimistic sending and reconnection with message replay.
5k
Concurrent users
<1s
Reconnect time
∞
Rooms
Highlights
- Presence and typing indicators with debounced fan-out.
- Offline queue that replays messages on reconnect.
- End-to-end optimistic sending with server reconciliation.
Stack
ReactSocket.IOExpressMongoDB