Tales from the trenches: MySQL, Linux, and Thread Caching. Wow, it's been a busy week. I was totally swamped for several days dealing with the remember.yahoo.com MySQL servers and related stuff. And then I used a day or two to recover (sleep, shower, etc). Anyway, I made some interesting discoveries along the way. The most surprising one had to do with thread caching on Linux when you have a busy MySQL server–busy in a particular way, mind you. — Jeremy Zawodny. [PHP Everywhere]