Architecture

At a high level, realtime traffic flows through Phoenix channels, while administrative work can flow through JSON HTTP routes without opening a websocket.

Topic owner processes

Each events:<topic> logical room is backed by a single cluster-wide owner process that holds shared in-memory state. HTTP admin routes and websocket channel events both go through the same topic manager, so semantics stay aligned.

Where to read next

• Channels — events:* vs session.
• Topic state, session state, and cache — three storage shapes.
• Operations — health, readiness, and quorum.