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
- Publish Centrifugo Protobuf definitions to Buf Schema Registry, see #863. This means that to use Centrifugo GRPC APIs it's now possible to depend on pre-generated Protobuf definitions instead of manually generating them from the schema file.
- apiproto - definitions of server GRPC API
- unistream - definitions of unidirectional GRPC stream
- proxyproto - definitions of proxy GRPC API
- New integer option
grpc_api_max_receive_message_size(number of bytes). If set to a value > 0 allows settinggrpc.MaxRecvMsgSizeoption for GRPC API server. The option controls the max size of message GRPC server can receive. By default, GRPC library uses 4194304 bytes (4MB).
Fixes
- Fix occasional
panic: DedicatedClient should not be used after recycledpanic which could happen under load during problems with Redis connection.
Miscellaneous
- Release is built with Go 1.22.5
- All dependencies were updated to latest versions
- Check out Centrifugo v6 roadmap issue. It outlines some important changes planned for the next major release. The date of the v6 release is not yet specified.