Hello,

I'm building an image upload system that is being designed to store 400,000 images.

I'm seeking advice and prior art for how to store a huge number of files on the file system. I'm seeking alternatives to dumping them all in a single directory. :)

All the file names will contain a unique ID corresponding to a database row. So, file names may look like:

123.jpg

or

123456.gif

What I've thought of so far is to store files like this:

0/00/000/123.jpg
1/12/123/123456.jpg

I've done the math right, this means that each final directory will house ~1000 images, assuming less than 1,000,000 images in the system. I imagine there is a better design, and perhaps an existing module addressing this. However, I don't even know what terms I would use to search for this. All help appreciated!

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