Wednesday, April 9, 2014

Why aren't multi-object updates atomic?

Losing ACID across shards isn't an excuse for not having it within a shard. Applications control the shard key and can co-locate data that would benefit from this feature. Performance imperfections in the product, limits in the product and application data models will require this in some deployments.

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Sysbench for MySQL 5.6 through 9.5 on a 2-socket, 24-core server

This has results for the sysbench benchmark on a 2-socket, 24-core server. A post with results from 8-core and 32-core servers is here . tl;...