Might I suggest that you split the folders up in your uploads.
0b692a00635682fabc78b6a50655242c.binary gets stored, for example in "./uploads/0b/69/2a/0b692a00635682fabc78b6a50655242c.binary" etc. Too many files in one dir can have problems or be slow.
BTW: normally the files will expire within a specific timeframe and will be removed by a scheduled cleanup process. This should limit the impact, but if the system is heavily used it might become a problem.
0b692a00635682fabc78b6a50655242c.binary gets stored, for example in "./uploads/0b/69/2a/0b692a00635682fabc78b6a50655242c.binary" etc. Too many files in one dir can have problems or be slow.