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> Wikipedia is some MySQL databases with read-only slaves front-ended by Nginx caches and load balancers. You're not wrong, but they are slightly more complica
by rrdharan 9y ago
> Wikipedia is some MySQL databases with read-only slaves front-ended by Nginx caches and load balancers.
You're not wrong, but they are slightly more complicated than that:
https://meta.wikimedia.org/wiki/Wikimedia_servers https://meta.wikimedia.org/wiki/Wikimedia_servers
They have Kafka, ElasticSearch, some workflow engine thing, and they manage a distributed object store (Swift) deployment.
Apparently in Wikimedia's case they also have a stated company policy / philosophy around self-managed infrastructure that prevents them from using public cloud for a bunch of stuff (I've heard this from a former employee but can't find any further documentation about it).