Saturday, August 10, 2013

Uptime Report for My Live Windows Azure Web Site: July 2013 = 99.37%

My Android MiniPCs and TVBoxes blog runs WordPress on WebMatrix with Super Cache on Windows Azure Web Site (WAWS) Shared Preview and ClearDB’s MySQL database (Venus plan) in Microsoft’s West U.S. (Bay Area) data center. Service Level Agreements aren’t applicable to the Web Services Preview; only sites with two or more Reserved Web Site instances qualify for the usual 99.95% uptime SLA.

  • Running a Shared Preview WAWS costs ~US$10/month plus MySQL charges
  • Running two Reserved WAWS instances would cost ~US$150/month plus MySQL charges

I use Windows Live Writer to author posts that provide technical details of low-cost MiniPCs with HDMI outputs running Android JellyBean 4.1+, as well as Google’s new Chromecast device. The site emphases high-definition 1080p video recording and rendition.


The site commenced operation on 4/25/2013. To improve response time, I implemented WordPress Super Cache on May 15, 2013.

Here’s Pingdom’s summary report for July 2013:


Pingdom’s graphical Uptime report (in Downtime mode) for July 2013:


And here’s their Response Time report for the same period:


Note: I have no explanation for the difference in average response time between the above and the summary report.

The Windows Azure Management Portal displays resource consumption for a maximum period of one prior week:


The 3,445 maximum requests per hour on 8/9/2013 is typical for prior July 2013 weeks.

I plan to report and log uptime values monthly with pages similar to OakLeaf Systems’ Uptime Report for my Live OakLeaf Systems Azure Table Services Sample Project posts, which has more that two full years of uptime and response time data as of June 2013.

Month Year Uptime Downtime Outages Response Time
July 2013 99.37% 04:40:00 45 2,002 ms
June 2013 99.34% 04:45:00 30 2,431 ms
May 2013 99.58% 03:05:00 32 2,706 ms

As noted above, Windows Azure Web Shared Sites are in preview mode as of July 2013 so the usual 99.98% uptime Service Level Agreement (SLA) doesn’t apply.