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Developer Ditches Django Channels for Dedicated Pub/Sub Gateway to Tame WebSocket Scale

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A developer running a multi-tenant Django application replaced Django Channels with Centrifugo, a standalone real-time pub/sub server, after WebSocket connections at scale began overwhelming app workers. Keeping thousands of persistent sockets in-process forced servers to simultaneously handle fast API responses and long-lived idle connections, degrading both. The breaking point came from reconnect storms during deployments, where simultaneous TLS handshakes and authentication requests spiked CPU to 100% and risked taking servers down entirely. In the new architecture, clients connect directly to Centrifugo while Django resumes its role as a standard WSGI app, responsible only for issuing short-lived JWT connection tokens and publishing events via HTTP. The result is a cleaner separation of concerns, with Django no longer holding any open connections and the real-time layer handled by infrastructure purpose-built for it.

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