Hard Drive Reliability

Cloud service provider Backblaze has updated its earlier study of hard drive failure rates (Nov 2013) in its own infrastructure – from 27,000 to more than 34,000 drives, and the new report (Sep 2014) is quite informative. Hitachi comes out pretty high, Western Digital has produced some good drives, but Seagate tends to come out […]

Web Logs and Statistics

I’ve previously covered how user perspective and that browser to web server latency is a dominate cause of web server performance issues. Assuming you’ve resolved those as best as you can how to you measure server performance at a per request level. Web servers allow you to put their processing time into the logs however its not there by default. […]