Saturday, January 15, 2011

Windows Azure’s Uptime Beats Google’s from 1/3/2010 through 1/9/2010 Per

I report monthly uptime for my live OakLeaf Systems Azure Table Services Sample Project - Paging and Batch Updates Demo with data from Pingdom’s free monitoring service. (See Windows Azure Uptime Report: OakLeaf Table Test Harness for December 2010 (99.90%) as a recent example.)

I also obtain weekly uptime data from, which compares uptime and latency of the site you specify with that of (by default). I was surprised to see Windows Azure beat Google’s uptime for the week of 1/3 to 1/9/2010:


The average response time of my demo app, which includes 128 milliseconds for obtaining and loading a page of Windows Azure Table data, is almost as fast as Google’s home page. In fact, deducting the time for data operations, results in an average response time of 307.23 ms, which is about 10% better than Google’s for the period.

The Sample project runs on one Web Role instance in Microsoft’s South Central US (San Antonio, TX) data center, so it’s not subject to Microsoft’s 99.9% availability Service Level Agreement (SLA), which requires two running instances. Here’s the sample project’s single page: