In June, I gave a talk at the dotScale conference in Paris about WordPress.com’s MySQL database architecture and infrastructure. The video is now online:
Reblogged this on Elmar Klausmeier's Weblog and commented:
Very interesting talk on the scaling challenge at WordPress.com.
Some key points:
500 million database tables
3 data centers in USA
400.000 shards moved per day
storage on SSD
~10% of total infrastructure costs are related to backups
~500 GB / shard
50 million sites
2.200 servers, and 500 database servers
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