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haskell-Data.Hash.Consistent

Data.Hash.Consistent

A consistent hash is a technique to manage the fair distribution of cacheable entities among hosts. Each host identifier has its crc32 hash calculated and stored in a Vector along with its canonical host name. The host identifier may be differentiated from its canonical host name by a multiplying factor, in our case a simple integer appeneded to the hostname to provide it with a number of entries in the consistent hash, all evenly distributed.

This technique is explained in these links:

http://en.wikipedia.org/wiki/Consistent_hashing

http://www.tomkleinpeter.com/2008/03/17/programmers-toolbox-part-3-consistent-hashing/

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Fairly assign cacheable entities to cache hosts

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