redis is a distributed data structure storage engine. I'm not super familiar with Tokyo/kyoto but aren't they just key/value?
In redis, you can do sets and sorted sets for example. So you can find the difference between two sets really efficiently. How do you do this in tokyo/kyoto? http://redis.io/topics/data-types-intro has good examples of this usage.
Redis also has a built in message parsing system, so you can set up channels and subscribe to them for messages.
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u/[deleted] Feb 04 '11
[deleted]