centrifugal/centrifugo v6.5.2

on GitHub

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, Server-Sent Events (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

• Add use_existing_consumer option for NATS async consumer by @b43 #1074. This allows using existing pre-created consumer and not rely on Centrifugo options to create one.
• New publication_data_format channel global and namespace option #1085.
• Support for grpc static_metadata (see grpc object), tweak http static_headers behaviour to match the doc #1076
• Better performance. Eliminate allocations under active batching scenario coming from Prometheus metrics. See centrifugal/centrifuge#530
• Better performance. Redis key build optimizations centrifugal/centrifuge#534
• New example. Centrifugo Delta Compression Example - demonstrates usage of Delta compression in channels. Just docker compose up and open http://localhost:8080

Fixes

• This release addresses #1083 by introducing publication_data_format mentioned above.

Miscellaneous

• This release is built with Go 1.25.5.
• Updated dependencies.
• See also the corresponding Centrifugo PRO release.