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Facebook Schema and Performance
From the article “Facebook shares some secrets on making MySql scale” “800 million users and handling more than 60 million queries per second” …”4 million row changes per second.” and that was almost...
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SQL joins visualized in a surprising way
Saw a good posting on SQL joins today that echoes a classic image of SQL joins: I loved this graphic when I first saw it. Seeing the graphic made me think “wow, I can actually wrap my mind...
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CURSOR_SHARING : a picture is worth a 1000 words
Anyone who has been around Oracle performance over the years knows the grief that hard parsing SQL queries can cause on highly concurrent applications. The number one reason for hard parsing has been...
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