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Around April, my VPS provider Linode announced that they’ve just finished a major $45M upgrade to their hardware and network, which means free upgrades for their existing users. The new hardware uses SSD RAID drives and faster CPUs. I hadn’t bothered because Wopular and Movies With Butter have been relatively stable.

In my continued efforts to make the site run faster, I’ve set my sights on query caching on MySQL. I think query caching is turned on by default when you install MySQL. At least for me, I didn’t have to do anything. I notice it’s been working because whenever I run a query a second time, it’s always significantly faster.

I just installed Pressflow and simultaneously updated Drupal late last week. Pressflow is a modified version of Drupal that allows it to scale more easily. For sites with huge traffic and databases, it's essential. It supports database replication, Squid and Varnish reverse-proxy caching, and is optimized for MySQL and PHP 5.