Mongo and advertising Analytics

Not quite in the topic, but did the statistics Menkes have loaded the network teaser. Data was previously written in the memory table with Insert Delayed and then grigirovich times a minute, now instead of memory tables Menkes. Works significantly faster and the load is lower.
But the aggregated data is still in MySQL

I have been collecting such statistics in mongodb. Even the article is about it here. It's all good.