Real-time
by @ops Elixir + Redis: Presence & Broadcast Service
Who's-online presence and pub/sub broadcast built on Elixir/OTP — the runtime this exact pattern (Phoenix Presence) was designed around, not a port of the idea into a language that has to work harder for the same guarantees.
Loads this recipe straight into the wizard — every setting stays editable before you generate anything.
The stack
Install
# pulls this exact recipe straight from the Vault $ npx stacktora install elixir-presence-broadcast --remote $ stacktora sync # generate the files
What you get
More from the Vault
Bun + Postgres + Redis: Live Trivia / Game Show Host Backend
Host-driven, synchronized live rounds with timed audience responses — distinct from the Turn-Based Multiplayer recipe: that's async turns at each player's own pace, this is a live host controlling pacing for everyone simultaneously, Kahoot-shaped.
Bun + Postgres + Redis: Real-time Collaborative Code Editor Backend
Multi-cursor, multi-editor operation sync for a shared code editing surface — distinct from the Whiteboard recipe: same broadcast-and-sync shape, applied to a text/code document instead of a drawing canvas, a genuinely different data model and conflict-resolution need.
Chat & Messaging Backend
Message history in Postgres, presence and pub/sub fan-out via Redis — the actual backend shape a real-time chat feature needs, not just a raw WebSocket server with nowhere to put the messages.
Elixir + Postgres + Redis: Live Sports Score & Event Ticker
Live-updating scores and event feeds broadcast to many simultaneous viewers — Elixir/OTP's connection-handling model suiting the fan-out-to-thousands-of-viewers shape of this problem specifically.