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, SockJS, 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
- Avoid keeping zero offsets in history meta hash keys in Redis – slightly reduces memory consumption of Redis, see centrifugal/centrifuge#332
Fixes
- Centrifugo v5.1.1 fixed
Lua redis lib command arguments must be strings or integers scripterror for new Centrifugo setups and new keys in Redis, but have not provided solution to existing keys. In centrifugal/centrifuge/#331 we fixed it. - Updating
github.com/redis/rueidisto v1.0.22 fixes unaligned atomics to run Centrifugo with Redis engine on 32-bit systems, some details
Misc
- Opentelemetry dependencies updated
- We now have a bash script for quick local setup of Redis cluster - to simplify development