From the post:
Jeremy Cole, a DBA Team Lead/Database Architect at Twitter, gave a really good talk at the O’Reilly MySQL conference: Big and Small Data at @Twitter, where the topic was thinking of Twitter from the data perspective.
One of the interesting stories he told was of the transition from Twitter’s old way of storing tweets using temporal sharding, to a more distributed approach using a new tweet store called T-bird, which is built on top of Gizzard, which is built using MySQL.
OK, so your Christmas wish wasn’t for a topic map with quite that level of input everyday. You can still learn something about design of a robust architecture from this presentation.