Centrifugo is an open-source scalable real-time messaging server. Centrifugo can instantly deliver messages to application online users connected over supported transports (WebSocket, HTTP-streaming, SSE/EventSource, GRPC, WebTransport). Centrifugo has the concept of a channel – so it's a user-facing PUB/SUB server.
Centrifugo is language-agnostic and can be used to build chat apps, live comments, multiplayer games, real-time data visualizations, collaborative tools, etc. in combination with any backend. It is well suited for modern architectures and allows decoupling the business logic from the real-time transport layer.
Several official client SDKs for browser and mobile development wrap the bidirectional protocol. In addition, Centrifugo supports a unidirectional approach for simple use cases with no SDK dependency.
For details, go to the Centrifugo documentation site.
What's changed
Improvements
- 🎄 Recap what happened with Centrifugo in 2024 in Notable Centrifugo v5 milestones in 2024 blog post
- Change Dockerfile to run
centrifugounder non-root user #922 by @dmeremyanin - Update
alpinebase image from 3.18 to 3.21 in Centrifugo Dockerfile
Fixes
- Fix a deadlock during pub/sub and recovery sync when using Redis engine and server-side subscriptions, fixes #925
- Fix pause/resume race in Kafka async consumer #927 – the race could lead to a partition non being processed, while in normal condition the chance of the race is minimal, this was observed in a real system under CPU throttling conditions.
- Fix flaky
TestHandleRefreshWithoutProxyServerStarttest #920 by @makhov
Miscellaneous
- This release is built with Go 1.23.4.
- Check out the Centrifugo v6 roadmap. It outlines important changes planned for the next major release. We have already started working on v6 and are sharing updates in the issue and our community channels.
- See also the corresponding Centrifugo PRO release.