Nice-to-haves that weren't part of the student project

[RadValentin]

A list of things that were planned for the student project but not implemented due to time constraints:

• Add API caching #17
• Implement other changes not implemented in #9
• Re-rank results based on release country #8
• Store and retrieve mbids using UUID data type internally
• Use Memcached or Redis to share the cache between workers. This way each worker won't need to store its own copy of the features file.
• Artist search results (implies artist page)
• Album search results (implies album page)

Reading list

• https://www.enjoyalgorithms.com/blog/music-recommendation-system-using-ml