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I'm not sure what version of Redis you were using, but depending on the data you're storing, 2.2 uses significantly less space than previous versions.

Some data from GitHub: http://technoweenie-ruby-onales.heroku.com/#34

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It looks like our approaches are very different. Stratocaster stores lists of integer IDs, which Redis optimizes for pretty heavily. We're taking the list of IDs and doing a multi-get from either memcache or mysql.

It looks like this lib uses Sets of the actual event data. It won't be able to take advantage of the same optimizations.

On the plus side, switching from storing zsets of actual event data to storing integer ids should be a pretty minor code change.

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