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From Mike Malone <>
Subject Re: Memcached protocol?
Date Mon, 05 Apr 2010 20:35:14 GMT
> That's useful information Mike. I am a bit curious about what the most
> common use cases are for atomic increment/decrement. I'm familiar with
> atomic add as a sort of locking mechanism.

They're useful for caching denormalized counts of things. Especially things
that change rapidly. Instead of invalidating the counter whenever an event
occurs that would incr/decr the counter, you can incr/decr the cached count

In the case of Cassandra, they're useful for keeping counts of things in
general, since there's no efficient way to perform count operations with


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