If you have a great amount of tiny images then you are relying in how fast is the filesystem to localize the image. Chances are that depending on the index you

If you have a great amount of tiny images then you are relying in how fast is the filesystem to localize the image. Chances are that depending on the index you are using MySQL could do a better job (this depends on the storage engine but usually is one file for the table and another ones for indexes)