What I understand from this is "I want this and I want that, with sugar". Problems that don't seem to be caused by the platform but because you probably haven't found the right/better solution yet. That's it. And it seems to have nothing to do with statements like "backends don't scale".
On Fri, Nov 23, 2012 at 10:38 AM, Brandon Wirtz <[email protected]> wrote: >> And at the end of the day, if nothing else works for you, there's also > Compute Engine. Have you tried that? > > Yeah, the latency between AppEngine and Compute Engine is often too high for > some of the stuff we want, and without access to the shared datastore we > lose too much along the way. > > > >>> And there are weeks when backends will work as advertised. Then they > won't. >> >> You'd have to back that up with more than just words and links to >> SO/issue tracker with missing config params or "more info needed" >> label :) > > Have forwarded in the past. Several apps used to run almost exclusively as > backends. Used the backend for NLTK which by default doesn't fit in an F4. > So it ran in an f8 backend. The front end would proxy requests so that we > could have a pretty URL, and that would then hit the backend. One day > magically it stopped auto-scaling. So we moved to static backends. Due to > cost we stripped NLTK down to fit in an F4. Now we don't use NLTK. > > Backends are still useful for load testing, but they 503 a lot. Even when > they are working, because you don't have the control you do of a front end, > if you suddenly need 100 requests it fails. > > The queue per backend is 10, and only one new instance at a time will spin > up so you only get a queue of 20 durring the time that you spin from 1 -2 > and if your spin up time is 1.5s then you can only handle 16-ish request in > the first second. Not real useful if you want to process 100 articles that > will all take 90s to run. > > There is not a good way to use "defer" so you can't do retries either, > > > > -- > 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.
