Full-stack assignment, backend part

This assignment consists of two parts:

2. NodeJS Backend - a mainly back-end focused task, where you can show off your back-end development skills.

You can fork this repository and show your result.

Good luck!

2. NodeJS Back-end

Create a node module that can assess a list of webservers and then returns a server with the lowest priority. Also create a unit test that can check if the function is running properly.

Requirements:

• A node module that has a

  findServer()
  function which returns a Promise that either:
  • Resolves and return an online server with the lowest priority.
  • Reject with an error if no servers are online.

• The HTTP server requests should be used to check if the server is online or offline depending on the following requirements:

  • All server GET requests should be run in parallel.
  • The GET request should timeout after 5 seconds.
  • When the GET request responds with a statuscode of 200-299 it is considered online.

• A unit test that checks all the underlying components/requirements.

  • The server requests should be mocked.

JSON Array to use

What are we expecting:

• Neatly written and formatted code for production level environment
• Demonstration of knowledge on NodeJS
• Demonstration of knowledge on Promises
• Demonstration of knowledge on Unit Testing including experience with mocking target server(s).
• Impress us with the skills you have (Typescript preferred)

Tools and frameworks you probably want to use:

Results

About the project

• NestJS with MVC
• Sequelize ORM, with migrations set up in the project, the path is src/database/migrations. One of them is for creating a table in the database in order to store the test data. The second one adds the test data from the assignment
• Setup for Postgres
• Automapper to map entities and DTOs
• Swagger and DTO properties validation
• Throttling and caching the GET requests with Redis
• Docker
• Hot reload for dev mode
• Some interceptors, an exception filter
• Versioning

Installation

Running the app

Test

License

Nest is MIT licensed.