Socket.IO vs uWebSockets: What are the differences?
Developers describe Socket.IO as "Realtime application framework (Node.JS server)". It enables real-time bidirectional event-based communication. It works on every platform, browser or device, focusing equally on reliability and speed. On the other hand, uWebSockets is detailed as "Simple, secure & standards compliant web I/O for the most demanding of applications". It is a simple to use yet thoroughly optimized implementation of HTTP and WebSockets. It comes with built-in pub/sub support, HTTP routing, TLS 1.3, IPv6, permessage-deflate and is battle tested as one of the most popular implementations, reaching many end-users daily.
Socket.IO and uWebSockets can be primarily classified as "Realtime Backend / API" tools.
Some of the features offered by Socket.IO are:
- 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.
On the other hand, uWebSockets provides the following key features:
- HTTP and Websockets
- Built-in pub/sub support
- HTTP routing
Socket.IO and uWebSockets are both open source tools. Socket.IO with 47.7K GitHub stars and 8.68K forks on GitHub appears to be more popular than uWebSockets with 10.9K GitHub stars and 1.07K GitHub forks.
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