I got a java-ee application, where I collect informations about movies. Im my backend I provide data like the name, description, genre and a random uuid.

I also got lots of related files, which are stored on a file server. Including some screenshots, the dvd or bluRay cover and video trailers.

My current approach is:

When saving the files to the fileserver, I retrieve the movies random uuid (which is the primary key btw.). I then rename the files screenshot_[UUID]_1, screenshot_[UUID]_2 ... etc.

Now, there are lots of other ways to handle this, like saving all filenames in a database or creating a dir structure on the fileserver for every uuid and, e.g., return all images in the "[uuid]/screenshots" folder via REST.

I expect about 30k requests a day, so the service has to be pretty performant.

Whats the best way to solve this?