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From Darren Smythe <>
Subject Billions of counters
Date Thu, 13 Jun 2013 18:19:50 GMT
We want to precalculate counts for some common metrics for usage. We have
events, locations, products, etc. The problem is we have millions
events/day, thousands of locations and millions of products.

Were trying to precalculate counts for some common queries like 'how many
times was product X purchased in location Y last week'.

It seems like we'll end up with trillions of counters for even these basic
permutations. Is this a cause for concern?


-- Darren

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