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Centrifugo

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In category: Communication / Custom Communication Systems

About Centrifugo

Language-agnostic real-time messaging (Websocket or SockJS) server.

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  •  Latest commit: Feb 12, 2023  

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More about Centrifugo

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.

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Why Centrifugo

The core idea of Centrifugo is quite simple – it's a PUB/SUB server on top of modern real-time transports:

scheme

The hard part is to make this concept production-ready, efficient and available from different application environments. Centrifugo is a mature solution that already helped many projects with adding real-time features. It provides unique properties not available in other OSS solutions in the area:

  • Built-in scalability to many machines with Redis, KeyDB, Nats, Tarantool
  • Simple HTTP and GRPC server API to communicate from the backend
  • Flexible connection authentication mechanisms: JWT and proxy-like
  • Different types of Subscriptions: client-side and server-side
  • Hot message history in channels, with automatic message recovery upon reconnect
  • Online channel presence information, with join/leave notifications
  • A way to send RPC calls to the backend over the real-time connection
  • Strict and effective client protocol wrapped by several official SDKs
  • Variety of supported real-time transports, both JSON and binary Protobuf message transfer
  • Beautiful embedded admin web UI
  • And much more, visit Centrifugo doc site

Backing

This repository is hosted by packagecloud.io.

Private NPM registry and Maven, RPM, DEB, PyPi and RubyGem Repository · packagecloud

Also thanks to JetBrains for supporting OSS (most of the code here written in Goland):

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