A Phoenix.PubSub adapter backed by Redis.

Uses Redis Pub/Sub for cross-node message broadcasting, allowing multiple Elixir nodes to share a Phoenix.PubSub namespace.

Usage

Add to your supervision tree:

children = [
  {Phoenix.PubSub,
   name: MyApp.PubSub,
   adapter: Redis.PhoenixPubSub,
   redis_opts: [host: "localhost", port: 6379]}
]

Then use Phoenix.PubSub as normal:

Phoenix.PubSub.subscribe(MyApp.PubSub, "user:123")
Phoenix.PubSub.broadcast(MyApp.PubSub, "user:123", {:updated, %{name: "Alice"}})

Options

• :redis_opts - keyword list passed to Redis.Connection.start_link/1 and Redis.PubSub.start_link/1 (host, port, password, etc.)
• :node_name - node identifier (default: node())
• :compression - compression level for :erlang.term_to_binary/2 (0 = none, 1-9 = zlib levels, default: 0)