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Azure Web PubSub: Real-time WebSockets

Posted on by Nithin Mohan TK 1 min read

SignalR is great, but sometimes you want raw WebSockets or support for other languages (Python, Java clients). **Azure Web PubSub** is a managed WebSocket service that supports native WebSocket clients and the PubSub subprotocol.

Architecture

flowchart LR
    Client1[Browser A] <-->|WS| PubSub[Azure Web PubSub]
    Client2[Browser B] <-->|WS| PubSub
    
    PubSub <-->|Webhook/Upstream| Server[Backend Server]
    
    style PubSub fill:#E1F5FE,stroke:#0277BD

The service handles the massive concurrent connections. Your server only handles events (Connect, Message) via Webhooks.

Key Takeaways

  • Supports standard `json.webpubsub.azure.v1` subprotocol.
  • Ideal for cross-platform chat apps where clients are not just .NET/JS.

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Posted in Emerging Technologies

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