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PubNub vs Socket.IO: What are the differences?
Developers describe PubNub as "Build real-time apps quickly and scale them globally". 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. On the other hand, Socket.IO is detailed as "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.
PubNub and Socket.IO can be primarily classified as "Realtime Backend / API" tools.
Some of the features offered by PubNub are:
- PubNub SDKs support over 50 of the most popular environments, including: iOS, Android, JavaScript, .NET, Java, Ruby, Python, PHP and many more.
- Data Push - Establish and maintain persistent socket connections to any device (mobile, browser, desktop and server) and push data to global audiences in less than ¼ of a second
- Presence - Automatically detect when users enter or leave your app and whether machines are online
On the other hand, Socket.IO provides the following key features:
- Real-time analytics - Push data to clients that gets represented as real-time counters, charts or logs.
- Binary streaming - Starting in 1.0, it's possible to send any blob back and forth: image, audio, video.
- Instant messaging and chat - Socket.IO's "Hello world" is a chat app in just a few lines of code.
"Massively scalable & easy to use" is the top reason why over 31 developers like PubNub, while over 186 developers mention "Real-time" as the leading cause for choosing Socket.IO.
Socket.IO is an open source tool with 46.7K GitHub stars and 8.53K GitHub forks. Here's a link to Socket.IO's open source repository on GitHub.
According to the StackShare community, Socket.IO has a broader approval, being mentioned in 555 company stacks & 385 developers stacks; compared to PubNub, which is listed in 43 company stacks and 12 developer stacks.
We (my team) are building an App where we want to have Bi-directional texting, Single Directional Picture, and audio transfer.
We are building all this using Flutter.
There will essentially be 3 apps, 2 Mobile-based (Android and iOS) and 1 Microsoft Based. We've built up most of the code already, and made a few major mistakes but fixed it(namely had no proper state management).
How things will work:
Person A has a Mobile app 1, Person A presses a button that sends a "communication request" into a Pool of requests. Person B on Desktop App chooses a "communication request" from the pool, and engages in Bi-directional texting with Person A. Person B also opens communication with Person C who is on Mobile app 2, and they engage in Bi-directional texting. Person C will be notified of communication requests through Push Notifications.
So far we've been using Socket.IO, however, I'm starting to think that's not the best.
A problem we've encountered so far is that Person A(Mobile App 1 User), is the person who sends a "communication request" into the "Communication Pool". The Mobile App 1 User, can "cancel" the communication at any point in time. When they do that, I would like for a notification to be sent to Person B, the Desktop User, For them to pick up another communication request.
I am not sure how this should be done however, should it be done in the Back-end, then how does the Front-end get notified of the change?
Any advice on which to choose?
It's so simple when you use Firebase to manage the requests just make new field to the request for example callstate with values like "requesting" "incall" "cancelled" and both A and B can update this field.
I am building an IoT application that will utilize connected air quality sensors to provide real-time indoor air quality in offices. I want to be able to share this data with a few different databases, etc.
Wondering if anyone has any advice on which real-time streaming API would be best for this sort of application, or even how I should think about it?
For IoT, we support MQTT along with websockets and SSE. The pattern you're suggesting that involves harvesting data from devices and soaking into a database is easy to achieve with one of the Ably integrations (Serverless functions/webhook) . Here are some tutorials to do things like this: https://ably.com/tutorials/reactor-event-zapier#step2-mqtt-ably
We use Pusher at www.justlearn.com. It works fine. When you reach more users, Pusher gets expensive. We use Pusher for live chat between users. Their software is easy to use. We have had issues with auth on Pusher.
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.
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.
Hello Noam 👋,
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
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
Pros of PubNub
- Massively scalable & easy to use36
- Easy setup25
- Reliable20
- Great support19
- Flexible to integrate to custom applications14
- Sockets at Scale13
- 99.999% availability guarantees13
- High-Performance13
- High-Reliability12
- Multiplexing12
- Scalability7
- High-Availability5
- 70+ SDKs5
- Security4
- Azure Add-on4
- Heroku Add-on3
- Presence3
- Flexible3
- Easy to setup3
- Data Streams2
- Free Plan2
- Server-Side Cache2
- PhoneGap Plugin2
- AngularJS Adapter2
- Data Sync2
- Analytics2
- Support2
- Easy setup and very reliable1
- High cost, going up more in Summer '151
- Cool1
- Angular 2+ integration1
- Documentation, easy to use, great people/service1
- CTO stephen also is A++++++1
- Real time and easy to use.1
- Easy integration with iOS apps1
Pros of Socket.IO
- Real-time217
- Node.js141
- Event-based communication141
- WebSockets102
- Open source101
- Binary streaming26
- No internet dependency21
- Large community10
- Fallback to polling if WebSockets not supported9
- Push notification6
- Ease of access and setup5
- Test1
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Cons of PubNub
- Costly1
Cons of Socket.IO
- Bad documentation11
- Githubs that complement it are mostly deprecated4
- Doesn't work on React Native3
- Small community2
- Websocket Errors2
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