This is actually a GAE bug. According to GAE documentation the memcache service should by default log and ignore infrastructure faults (which would be a very sensible thing to do) but it doesn't.
I opened a ticket 6 months ago (yes, half a year!) http://code.google.com/p/googleappengine/issues/detail?id=6236 There is no excuse for leaving this broken for so long. It's an extremely harmful bug and yet easy to fix. I've been raising this issue every chance I get but the response from fellow GAE developers on this group has been muted. We should be outraged, people :-) Seriously, this bug can take down any of your sites if it happens to link up with a dodgy memcache service. From experience this can last up to half an hour. On May 17, 8:36 pm, Per <per.fragem...@gmail.com> wrote: > Hi Mathieu, > > not sure if you're aware of this (it took me a while as well) but you need > to design your application so it doesn't flinch even when memcache is > unavailable. Try-catch everything. We had an issue at the same time as you > as well, and it turned out that in one part of the application we had also > forgotten to try-catch memcache errors. Just keep improving until it's 100% > robust. Because memcache just isn't. A large scale downtime would probably > show up on the system status page, but local issues won't. > > Cheers, > Per > > > > > > > > On Wednesday, May 16, 2012 7:14:49 PM UTC+2, Mathieu Clavel wrote: > > > Memcache is now working as expected. > > Problem was from 16h to 18h (UTC+2) > > > Mathieu > > > Le mercredi 16 mai 2012 17:49:45 UTC+2, Mathieu Clavel a écrit : > > >> Hello, > > >> My production application is currently having memcache problem. > >> Nothing is visible in the global appengine system status : > >>https://code.google.com/status/appengine/ > > >> Error is : > > >> Caused by: com.google.appengine.api.memcache.MemcacheServiceException: > >> Memcache put: Error setting single item (...) > > >> Nothing is working : Jasper also has error : > > >> org.apache.jasper.runtime.JspFactoryImpl internalGetPageContext: Exception > >> initializing page context > >> com.google.appengine.api.memcache.MemcacheServiceException: Memcache put: > >> Error setting single item (_ahsXuelLhc5ClPxy8Dra2vPUQ) > > >> My application name is oav-agz. > > >> Regards, > > >> Mathieu -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
