binary_streaming

📊 High-Performance Binary Data Streaming

Stream large or binary content (e.g., audio, video frames) over WebSockets by using ActionCable’s transmit with raw binary payloads. This approach minimizes JSON overhead and achieves near real-time throughput.

# app/channels/stream_channel.rb
class StreamChannel < ApplicationCable::Channel
  def subscribed
    stream_from "stream_#{params[:session_id]}"
  end

  def send_chunk(data)
    binary = Base64.decode64(data['chunk'])
    ActionCable.server.broadcast("stream_#{params[:session_id]}", binary)
  end
end

// app/javascript/channels/stream_channel.js
import consumer from "../channels/consumer"

const channel = consumer.subscriptions.create(
  { channel: "StreamChannel", session_id: "abc123" },
  {
    received(binary) {
      // handle ArrayBuffer binary data
      playAudio(new Uint8Array(binary))
    }
  }
)

This method uses Base64 for transport safety then decodes on the server, streaming raw bytes for low-latency consumption.