datovard / instastore

Technical test for back-end developers

InstaStore

Technical test for back-end and full-stack developers.

• Instructions
• Requirements
• Improvements and trade offs

Instructions

1. Fork this repo.
2. Create a new branch.
3. Understand the functional and non-functional requirements.
4. Ask any questions to [email protected]. (you have 1 chance, make it worthy)
5. As your first commit, copy your questions and David's answers, and design the "architecture" of your service. Upload a sketch/photo/readme, etc explaining how your service is going to work, and when do you think you can deliver the final product (we expect you to deliver it in less than 2 days). If you are applying for a Fullstack position, send a wireframe with your proposed solution.
6. Have fun coding this challenge. Take into account that the data provided could have inconsistencies, make sure to handle them.
7. If you find blockers, keep moving and get them solved later, please write them down in a markdown file inside your repo.
8. Answer the Improvements and trade offs section.
9. Create a Pull Request (in your own fork), add 'davidcp90' as a reviewer, and send an email to [email protected]

Requirements

InstaStore is a microservice in charge of selecting the closest "convenience" store to deliver a groceries order to our B2B clients.

Non-functional

• We expect you to deliver idiomatic code in a way that is easy to read and follows the accepted guidelines in your area of expertise.
• You should write it on Node.js with Express.js. Libraries, transpilers , etc are up to you.
• If you are applying for a fullstack position, front-end must be build with React.
• Endpoints are fast (less than 300ms).
• Endpoints respond error codes that makes sense to the case.
• Please provide documentation for the endpoints you create.
• If you are applying for a fullstack position, front-end must be easy to use and it should have a nice look & feel.

Functional

1. Our B2B clients should be able to consume an endpoint that provides them the following information:

• storeId
• storeName
• isOpen
• coordinates
• nextDeliveryTime

2. The endpoint returns the closest store available
3. We need to keep track of each call to the endpoint

For full-stack developers

1. The UI should capture the address/position from a user
2. After capturing the address it should request the closest store and show the address captured and the closest store in a map, and their details (isOpen, next delivery time, coordinates, storeName, store phone number and email).
3. It should manage errors and unexpected requests. Users should always know what to do.
4. App should include a top bar with a logo (go nuts)
5. The app should be served through a CDN

Improvements and trade offs

1. What would you improve from your code? why?
2. Which trade offs would you make to accomplish this on time? What'd you do next time to deliver more and sacrifice less?
3. Do you think your service is secure? why?
4. What would you do to measure the behaviour of your product on a production environment?