jsynchronous VS Centrifugo

A data-synchronization library for Node.js

https://github.com/siriusastrebe/jsynchronous

Ever get tired of sending API requests and JSON payloads? Wouldn't it be cool if data just synced between server and client?

Jsynchronous lets you share deeply nested object/arrays between node.js and connected browsers – and any changes made to that variable.

For the very reasons listed in the article, I built:

https://github.com/siriusastrebe/jsynchronous

a library for keeping a javascript variables synchronized between Node.js servers and clients.

Websockets work great for message passing but it struggles with data structures more complicated than what JSON can represent. Jsynchronous syncs any javascript object or array with arbitrarily deep nesting and full support for circular data structures.

If a computer goes to sleep, or disconnects, websocket connections (and their underlying TCP connections) get reset so you lose any data sent while a computer is unavailable. Jsynchronous will re-send any data clients are missing.

There's also a history mode that lets you rewind to past states.

I recently built https://github.com/siriusastrebe/jsynchronous which uses event sourcing to synchronize javascript variables on the server with connected browsers.

You can also replay states using a special “rewind” mode, a core advantage of event sourcing.

Not for rust - for javascript: Take a look at this library: https://github.com/siriusastrebe/jsynchronous

Fullstack web developer, data visualization and real-time app specialist

I recently built and open sourced https://github.com/siriusastrebe/jsynchronous a real-time data sync library for javascript.

Location: Seattle, full time roles

Hello, I am author of https://github.com/centrifugal/centrifugo. Our users can choose from WebSocket, EventSource, WebTransport (experimental stabilize in the future). WebRTC is out of scope as the main purpose is central server based real-time json/binary messaging, and WebRTC makes things much more complex since it shines for peer-to-peer and rich media communications.

What I'd like to add is that Centrifugo also supports HTTP-streaming – not mentioned by the OP – but this is a transport which has advantages over Eventsource - like possibility to send POST body on initial request from web browser (with SSE you can not), it supports binary, and with Readable Streams browser API it's widely supported by modern browsers.

Another thing I'd like to mention about Centrifugo - it supports bidirectional WebSocket fallbacks with EventSource and HTTP-streaming, and does this without sticky sessions requirement. I guess nobody else have this at this point. See https://centrifugal.dev/blog/2022/07/19/centrifugo-v4-releas.... Which solves one more practical concern. Sticky sessions is an optimization in Centrifugo case, not a requirement.

If you are interested in topic, we also have a post about WebSocket scalability - https://centrifugal.dev/blog/2020/11/12/scaling-websocket - it covers some design decisions made in Centrifugo.

Check out https://github.com/centrifugal/centrifugo - it was initially designed to be a standalone language-agnostic real-time messaging server. So it may be used with Django without radical change in the existing application and using ASGI. It can also provide a much better performance if you care about it.

https://github.com/centrifugal/centrifugo

It's a complete solution, including server, admin panel and client library.

We're an European company and use OVH, Hetzner and others.

Hello! Theoretically you can take a look at https://github.com/centrifugal/centrifugo - which is a standalone self-hosted real-time messaging server. It does not have native support for Laravel and not compatible with Pusher protocol, though integrating with any backend system, including Laravel: see the blog post https://centrifugal.dev/blog/2021/12/14/laravel-multi-room-chat-tutorial, also has some helper packages:

Hello, it's also possible to design an app in a way that its core will be built with Python, but WebSocket part delegated to something external and efficient like https://github.com/centrifugal/centrifugo – the benefit of the approach is that application business logic is completely decoupled from the real-time transport layer. This may lead to a scalable design with graceful degradation. I think this is especially useful when you already have backend built with Django and need to handle millions of concurrent connections.

Centrifugo https://centrifugal.dev/ https://github.com/centrifugal/centrifugo