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### :bulb: Quite simple
µWebSockets.js is a C++ implementation of the WebSocket/HTTP protocols for Node.js, easy to use from JavaScript. It has been developed and supported since 2016. Think of it as a [much faster](https://alexhultman.medium.com/serving-100k-requests-second-from-a-fanless-raspberry-pi-4-over-ethernet-fdd2c2e05a1e) alternative to both Socket.IO and Fastify/Express.js; it comes with both router and pub/sub support. Browse the [documentation](https://unetworking.github.io/uWebSockets.js/generated/) and see the [main repo](https://github.com/uNetworking/uWebSockets). There are tons of [examples](examples) but here's the gist of it all:
### :zap: Simple performance
µWebSockets.js is an HTTP/WebSocket server for Node.js that runs **[8.5x that of Fastify](https://alexhultman.medium.com/serving-100k-requests-second-from-a-fanless-raspberry-pi-4-over-ethernet-fdd2c2e05a1e)** and at least **[10x that of Socket.IO](https://medium.com/swlh/100k-secure-websockets-with-raspberry-pi-4-1ba5d2127a23)**. It comes with both router and pub/sub support and is suited for extraordinary performance needs. Browse the [documentation](https://unetworking.github.io/uWebSockets.js/generated/) and see the [main repo](https://github.com/uNetworking/uWebSockets). There are tons of [examples](examples) but here's the gist of it all:
```javascript
/* Non-SSL is simply App() */
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![](misc/chart.png)
### :crossed_swords: Battle proven
We've been fully standards compliant with a perfect Autobahn|Testsuite score since 2016<sup><a href="https://unetworking.github.io/uWebSockets.js/report.pdf">[2]</a></sup>. Companies with everything to lose rely on µWebSockets on a daily basis - we power the trading APIs of [Bitfinex.com](https://bitfinex.com), handling volumes of about a billion USD every day. Other companies include [Trello](https://trello.com), where µWebSockets is serving their 50 million users with real-time board updates.
We've been fully standards compliant with a perfect Autobahn|Testsuite score since 2016<sup><a href="https://unetworking.github.io/uWebSockets.js/report.pdf">[2]</a></sup>. Companies with everything to lose rely on µWebSockets on a daily basis - we power the trading APIs of [Bitfinex.com](https://bitfinex.com) & [Kraken.com](https://www.kraken.com/), handling volumes of multiple billions of USD every day. Other companies include [Trello](https://trello.com), where µWebSockets is serving their 50 million users with real-time board updates.
### :package: Easily installed
We *recommend, for simplicity* installing with `yarn add uWebSockets.js@uNetworking/uWebSockets.js#v18.14.0` or any such [release](https://github.com/uNetworking/uWebSockets.js/releases).