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seen Apr 15 at 19:38

May
21
awarded  Caucus
Sep
29
comment 100% uptime for a web application
I echo the "not jumping to conclusions" statement...if the customer means 100% uptime (minus scheduled maintenance) then it may be more of a reasonable requirement.
Nov
9
awarded  Scholar
Nov
9
accepted Looking for a recommendation on measuring a high availability app that is using a CDN
Nov
9
awarded  Supporter
Nov
9
comment Looking for a recommendation on measuring a high availability app that is using a CDN
@user44700: The trick here is twofold - the CDN provides a ton of metrics similar to what you describe...and we have our own internal tests every 5 minutes on the origin server. The magnitude of data points from the CDN vs. internal is completely unbalanced, yet they're pretty much treated as if they were balanced (i.e., (CDN + Internal) / 2 = uptime)...I don't believe that management understands basic statistics... :)
Nov
9
comment Looking for a recommendation on measuring a high availability app that is using a CDN
Thanks for the link...we pretty much follow/measure in a manner consistent with that article.
Nov
8
awarded  Nice Question
Mar
5
comment Looking for a recommendation on measuring a high availability app that is using a CDN
@Warner: Unfortunately, the server running the metrics is exactly what management considers "the user experience". Each test is 5 minutes apart, so basically all of our "outages" are in 5 minute increments regardless of the actual outage time (it could be 1 second.) Our CDN provides metrics from it's perspective, and it is much more granular than one test every 5 minutes... I would like to report these separately. Unfortunately, management has decided to take every single application, pick the worst case, and report that...which does not reflect a real SLA...
Mar
4
awarded  Student
Mar
4
awarded  Editor
Mar
4
revised Looking for a recommendation on measuring a high availability app that is using a CDN
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Mar
4
asked Looking for a recommendation on measuring a high availability app that is using a CDN
Mar
4
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