Angular chat socket.io server

This server uses the socket.io library to create a websocket server. Basically it sends messages with object to specific clients.

Installation process

Using yarn

$ yarn install

Using npm

$ npm install

Testing

A unique test is provided as example of possible workflow. Running npm test should launch the test suite.

Pros & Cons of the solution

Pros

• Easily/quickly installed and coded
• Good official documentation with examples
• Lots of example on the internet

Cons

• Quality of code and maintainability (callback hell)
• Does not use Promises/A+ (possible woraround socket.io-as-promised)

Scalability

Using redis it is possible to easily scale the application. The socket.io-redis module is an adapter allowing to save every message into redis. In order to do this, only two lines are required to be added

...
const io = require('socket.io')(server);
const redis = require('socket.io-redis');

io.adapter(redis({ host: 'localhost', port: 6379 }));
...

Other projects exists like [socket.io-cluster][npm-socket.io-custer].

A complete scalable chat app using this workflow can be found on github