File Storage for Web Applications: Filesystem vs DB vs NoSQL engines

Question

I have a web application that stores a lot of user generated files. Currently these are all stored on the server filesystem, which has several downsides for me.

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Answer 1

maybe a hybrid solution.

Use a database to store metadata about each file - and use the file system to actually store the file.

any restructuring of 'folders' could be modelled in the DB and dereferenced from the actual OS location.