A similar issue I have faced is when changing versions of my modules. I have to 
do it manually from the app engine console one at a time—at least I do not know 
of a better way, is there an API to do this? Many times modules depend on the 
same core libraries so I want to “upgrade” all of them together. If you have 
several modules by the time you get to the nth module the first one is already 
in the new version. 

I would like to be able to change the version of all of them together and the 
the system do the restarts of all of the services concurrently. I have only 
three modules along the lines outlined earlier in this thread but still this 
remains a manual non-atomic step.

PK
http://www.gae123.com

On October 12, 2014 at 9:08:09 PM, Kaan Soral ([email protected]) wrote:

Obviously what you say is true, however in the regular deployment scenario, the 
discrepancy is obviously minimized, as far as I observed, the instances that 
can shutdown, shutdown at once and new ones are born and I hope/assume the 
scheduler skips the alive/old instances and route requests to new ones until 
old requests at hand are completed, however there is no such(observed) routine 
for multi-module uploads, would be great if there was

I've noticed a very significant performance increase after I isolated the 
frontend requests in the default module, request delays that previously reached 
60 seconds vanished, now the interfaces are really snappy, I'm really happy to 
observe such performances (frontend requests are pretty optimized to run mostly 
around 1 seconds, however pre-modules, the request times were around 20 seconds 
instead)

I sincerely hope the performance increase is because of the modules/scheduling 
and not because I temporarily got into a nice datacenter :)
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