Create an event driven backend application where you control a postoffice to deliver incoming messages to a recipients mailbox. Our intent is not that this application should be production ready in any way. Skip steps that you feel are gold plating for the application.
Minimum feature set:
- Check mailbox:
curl --request GET --url http://localhost:9000/mail/<RecipientName> - Send messages.
curl --request POST --url http://localhost:9000/mail --header 'Content-Type: application/json' --data '{ "message": "test", "recipient": "<RecipientName>", "prio": false }'
The flow of the application should be something like this:
POST - Send Mail, Put Mail in Mailbox (place in Redis queue)
LOOP - Postman checks Mailbox and Mail is delivered to Postoffice.
LOOP - Postman sorts mail in Postoffice
LOOP - Postman deliver mail to recipient Mailbox (this is input (recipient) from Mail)
GET - Received mail
Things we will look at and perhaps dicuss:
- Handle race conditions.
- Ensure that you're utilizing TypeScript.
- Git workflow.
- Unit testing.
The delivery of your solution to us should be in the form of a repository. Private or not, it's up to you. Just make sure to invite us to your repo if it's private. Your repository can but doesn't have to be a fork of this repository.
In this repository we have provided you with a boilerplate that you can use to start if you like. But feel free to change it and add the tools/framework etc to your liking. It should however utilize some form of message queue, the boilerplate includes a redis queue setup with some helpers within packages/redis.
We have also provided routes and controller for a mailbox in src/mailbox/ and some boilerplating for a mailman and postoffice in src/mailman and src/postoffice.
- Clone repo
- Install https://docs.docker.com/install/ and NodeJS ([https://github.com/nvm-sh/nvm](nvm is useful for this))
- Run
npm i - Run
docker compose up --buildto start the NodeJS service and Redis
Run npm test to run the test suite.
Good luck!