Migrating Drupal sites without downtime using an ingenious combination of DNS switchover and proxying.

A review of the various HA solutions available for MySQL.

The idea is to allow only that much traffic through to your system which your system can handle successfully.

Everyone knows that problems always seem to happen when you are asleep, on holiday or away from your computer.

That awesome load-balanced, redundant, no-single-point-of-failure stack you’ve built? Yeah, doesn’t do you much good when the lights go out. In my experience, the worst, most sustained downtime has always been caused by power issues.

Why Github uses ldirectord for high-demand load-balancing.

Preparing your infrastructure for unexpected traffic spikes and ‘Slashdotting’, with caching, proxying and denormalisation of data.