How would it know?
And which measure do you use? Say I'm down to all users on AOL because Google suffered a DNS poisoning attack, Which has happened once before. Am I down? Google has DataStore Write locked (like happens on MS) my app handles that, but I bet yours doesn't. Am I down? Are You? Pre-Processing Latency rises to 20 seconds, so all requests that take more than 40s to complete fail. Is the service down? All processes take 50% longer than they did previously, now all requests that took 40s fail, and apps using a max idle/ min latency setting fail 20% of the time Is the Service 100% down? 50% down? 20% down? I now have edge cache handling 40% of all my requests. So even if all GAE is down I'm 40% up, does that mean that 99.1% = 99.5% My Uptime monitoring "Internally" polls every 20 seconds and uses a random number in the query as a cache buster to prevent the cache giving a false up, but the request is also optimized to not put load on the system so I don't know if something like all reads from memcache return null. SLA's are worth about as much as the HTML they are written on. You either trust that the company will be up, or you don't. Amazon's week of down time means they are 200 weeks from 99.5% uptime. And I'd rather have my week of down time spread out in 5 minute increments over 4 years than getting it all at once. From: [email protected] [mailto:[email protected]] On Behalf Of Will Sent: Monday, November 21, 2011 5:19 PM To: [email protected] Subject: [google-appengine] uptime statistics for each HRD application An uptime statistics report for each HRD application seems in order, just like usage reports for each app. Since every app is paying for its own guaranteed uptime, with individual report, we won't get into this "although your app is broken for this short period time, the system as a whole functions as expected" mess... Thoughts? Will -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
