Here is exercise. Implement an application for performing searches on image metadata. Write the application using node.js. You can deploy it on eg. Heroku, which also offers Mongodb as a service, but if you rather deploy it somewhere else, that’s fine as well. Our main interest is the code you produce for this.

Scope:
1. Retrieve image metadata for 100 most viral images on Imgur using Imgur API (https://api.imgur.com).
2. Store metadata in local MongoDB instance (no image binaries)
3. Implement search API to perform keyword searches on stored image metadata
4. Create a simple  single-page web client that integrates with the search API and renders the search results as images using imgur server
5. Implement unit tests for database
6. Implement integration tests for API layer