10 August 2009
A high availability website: It’s all about expensive redundant hardware with top of the line load balancers and an enterprise class SAN, right? Well, not necessarily.
There are several cheap or free steps you can take to ensure uptime before you splash your cash on lots of kit. If you’re not taking these steps you are wasting your money on your redundant hardware. Here are my top five things that bring sites down, in rough order of likeliness …
- Change
- Unexpected load
- Slow death
- Time related issues
- Hardware failure
Starting from the top, here is my explanation of each of these categories, together with ways to minimise the chance of it happening to your site.
Editor’s Note: We’ll be covering ‘Practical Advice for Scaling your Web App’ and ‘Advanced Web App Marketing Strategies’ at The Future of Web Apps.

