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Re:How we made editing Wikipedia twice as fast by samspenc on Tuesday December 30, 2014 @06:23PM (#8817336)
MariaDB is MySQL compatible. Had they gone with Cassandra, they would have had to replace the PHP-based MediaWiki software with something else. So not only the database, the entire software stack would have to be replaced as well.

Also, speaking from a few years' personal experience with HBase / Cassandra, the support for non-Java languages on these two NoSQL databases is small (though it is getting better.)

Re:How we made editing Wikipedia twice as fast by tracker1 on Monday January 05, 2015 @07:27PM (#8842223)
I worked on a project that used C* with node.js and it worked out very well... cluster of node servers, with minimal processing over a cluster of C* servers... very fast response times under some really big load.

Though node.js tends to be very flexible in terms of wrapping a friendlier interface around a less friendly one.