presence-room-42
Realtime chat
Rooms, membership and typing indicators on presence channels.
Use case
Live application state
Most realtime is not chat. It is a job that finished, an order that shipped, a build that went red — state that changed while someone watched a stale copy.
private-job-7c4
- private channels
- events
How it works
- 01Subscribe to the resourceA private channel named for the thing on screen — a job, an order, a deployment.
- 02Publish transitionsEach committed state change is published with the new state.
- 03ConvergeClients apply it; one that missed a transition re-reads over HTTP on reconnect.
Worth knowing
Publish after the write commits. Publishing first shows a state the database will not confirm if the transaction rolls back.
In code
job.js
js
// Publish the transition after it is committed, not before.await job.markComplete()await pusher.trigger(`private-job-${job.id}`, 'state-changed', { state: 'complete', finished_at: job.finishedAt.toISOString(),})Written with the official Pusher libraries, unmodified — there is no PushCaster package to install. Full documentation
Other things people build
All use casesprivate-user-1e9
Notifications
One server event, delivered to every surface a user has open.
private-metrics
Live dashboards
Push metrics as they change instead of polling for them.