November 2009
1 post
Let's talk about something incredibly geeky, the...
justinday:
If you’ve done any work on a highly scaled website the words ALTER and TABLE are probably two of the scariest words you’ve ever encountered. Nothing is worse than locking a really important and heavily used table for some undeterminable amount of time. Seconds turn into days, minutes into lifetimes. Okay that’s an exaggeration, but you get the idea.
There’s two techniques we use...