Using md5 sum of file contents as key

Justin Azoff JAzoff at
Fri Apr 18 17:35:11 UTC 2008

On Tue, 2008-04-15 at 12:30 +0100, Ian Sherratt wrote:
> Heya,
> We're considering using mogilefs as a storage solution, using a md5 sum (or 
> SHA-xx) of the file's contents as the key.  This key would be stored by each 
> application in their own databases along with all the metainformation which 
> is application dependent.
> Has any body used a function of the file contents as the key before?  Good 
> idea/bad idea?

Storing the checksum of the file also lets you verify the files

If mogilefs did this automatically, it could easily have a 'scrub'
feature in addition to fsck.

-- Justin Azoff
-- Network Performance Analyst

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