What are the pros/cons of using the filesystem as a big key value store

[fergiemcdowall]

This seems like a win/win all round- are there any disadvantages to using level-fsdown compared to leveldown? Is there a big difference in performance? Any gotchas?

[heapwolf]

Pros

• Consistent/familiar interface, if you're using level-* for lots of things already.
• A number of modules that are made to work with levelup will just work.

Cons

• It's very slow (may or may not mater for some use cases)
• Keys are obviously a security risk if you don't use the default encoding (limiting them in terms of characters that they can use).