BFX

The BFX challenge

Features

Each client will have its own instance of the orderbook.
Clients submit orders to their own instance of orderbook. The order is distributed to other instances, too.
If a client's order matches with another order, any remainer is added to the orderbook, too.

This project uses a number of open source projects to work properly:

[Node.js (https://nodejs.org/en/)] - Evented I/O for the backend.
[Jest (https://jestjs.io/)] - Testing framework designed to ensure correctness of any JavaScript codebase.

This project requires Node.js v14+ to run.

Install the dependencies and devDependencies and start the server.

npm install

Open your favorite Terminal and run these commands.

First step: Run the Server

# run server
1. Open a new terminal
2. Run: npm run server

Second step: Run the Client

# run client
1. Open another terminal
2. Run: npm run client

# run tests
$ npm run test

The tests need to be completed (unfortunately, I didn't have time to finish them). If there's more time available, I can finish both the unit and integration tests.
I would have liked to use something more asynchronous like a lookup to keep an open connection between the Server and the Client and send data when necessary.
I tried to keep it as simple as possible just to demonstrate the understanding of what was asked for within the proposed timeframe.
If there were more hours available, it would be possible to emulate more peers, but this is what I could accomplish within the given time frame.

MIT

Free Software, Hell Yeah!