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Socket.IO

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Socket.IO vs SockJS: What are the differences?

What is Socket.IO? Realtime application framework (Node.JS server). Socket.IO enables real-time bidirectional event-based communication. It works on every platform, browser or device, focusing equally on reliability and speed.

What is SockJS? A WebSocket emulation. It gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server, with WebSockets or without.

Socket.IO belongs to "Realtime Backend / API" category of the tech stack, while SockJS can be primarily classified under "Javascript Utilities & Libraries".

Socket.IO and SockJS are both open source tools. Socket.IO with 46.9K GitHub stars and 8.54K forks on GitHub appears to be more popular than SockJS with 1.72K GitHub stars and 276 GitHub forks.

Advice on Socket.IO and SockJS
Needs advice
on
Socket.IO
Firebase
and
Apollo

We are starting to work on a web-based platform aiming to connect artists (clients) and professional freelancers (service providers). In-app, timeline-based, real-time communication between users (& storing it), file transfers, and push notifications are essential core features. We are considering using Node.js, ExpressJS, React, MongoDB stack with Socket.IO & Apollo, or maybe using Real-Time Database and functionalities of Firebase.

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Replies (3)
Timothy Malstead
Junior Full Stack Developer at Freelance | 7 upvotes 路 234.7K views
Recommends
Firebase

I would recommend looking hard into Firebase for this project, especially if you do not have dedicated full-stack or backend members on your team.

The real time database, as you mentioned, is a great option, but I would also look into Firestore. Similar to RTDB, it adds more functions and some cool methods as well. Also, another great thing about Firebase is you have easy access to storage and dead simple auth as well.

Node.js Express MongoDB Socket.IO and Apollo are great technologies as well, and may be the better option if you do not wish to cede as much control to third parties in your application.

Overall, I say if you wish to focus more time developing your React application instead of other parts of your stack, Firebase is a great way to do that.

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Recommends
Ably

Hello Noam 馃憢,

I suggest taking a look at Ably, it has all the realtime features you need and the platform is designed to guarantee critical functionality at scale.

Here is an in depth comparison between Ably and Firebase

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Recommends
8base

Hey Noam,

I would recommend you to take a look into 8base. It has features you've requested, also relation database and GraphQL API which will help you to develop rapidly.

Thanks, Ilya

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Pros of Socket.IO
Pros of SockJS
  • 213
    Real-time
  • 143
    Event-based communication
  • 141
    Node.js
  • 102
    Open source
  • 101
    WebSockets
  • 26
    Binary streaming
  • 22
    No internet dependency
  • 9
    Fallback to polling if WebSockets not supported
  • 8
    Large community
  • 5
    Ease of access and setup
  • 4
    Push notification
    Be the first to leave a pro

    Sign up to add or upvote prosMake informed product decisions

    Cons of Socket.IO
    Cons of SockJS
    • 11
      Bad documentation
    • 4
      Githubs that complement it are mostly deprecated
    • 3
      Doesn't work on React Native
    • 2
      Websocket Errors
    • 2
      Small community
      Be the first to leave a con

      Sign up to add or upvote consMake informed product decisions

      What is Socket.IO?

      It enables real-time bidirectional event-based communication. It works on every platform, browser or device, focusing equally on reliability and speed.

      What is SockJS?

      It gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server, with WebSockets or without.

      Need advice about which tool to choose?Ask the StackShare community!

      What companies use Socket.IO?
      What companies use SockJS?
      See which teams inside your own company are using Socket.IO or SockJS.
      Sign up for Private StackShareLearn More

      Sign up to get full access to all the companiesMake informed product decisions

      What tools integrate with Socket.IO?
      What tools integrate with SockJS?
        No integrations found

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        Blog Posts

        What are some alternatives to Socket.IO and SockJS?
        SignalR
        SignalR allows bi-directional communication between server and client. Servers can now push content to connected clients instantly as it becomes available. SignalR supports Web Sockets, and falls back to other compatible techniques for older browsers. SignalR includes APIs for connection management (for instance, connect and disconnect events), grouping connections, and authorization.
        SocketCluster
        SocketCluster is a fast, highly scalable HTTP + realtime server engine which lets you build multi-process realtime servers that make use of all CPU cores on a machine/instance. It removes the limitations of having to run your Node.js server as a single thread and makes your backend resilient by automatically recovering from worker crashes and aggregating errors into a central log.
        PubNub
        PubNub makes it easy for you to add real-time capabilities to your apps, without worrying about the infrastructure. Build apps that allow your users to engage in real-time across mobile, browser, desktop and server.
        Pusher
        Pusher is the category leader in delightful APIs for app developers building communication and collaboration features.
        ExpressJS
        Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications.
        See all alternatives