Hi dburns,
according to
http://code.google.com/intl/en/appengine/docs/python/runtime.html#App_Caching
handler script with main() would cache itself and the global env as an
imported module
however, in my case, I have a variable defined inside a module that
would be imported (and cached) , but i would like to have that
variable be re-initialized in every requests. In particular, with this
example
### mymodule.py
counter = 0
def increment():
global counter
counter += 1
return counter
### myhandler.py
import mymodule
print "Content-Type: text/plain"
print ""
print "My number: " + str(mymodule.increment())
print "My number: " + str(mymodule.increment())
the variable "counter" is cached and subsequent requests use the
value from the previous request
but for my case, I would like to "disable" the caching and to have
"counter" being re-initialized to 0 in every request. The 1st
str(mymodule.increment()) always gives 1, and the 2nd always gives 2
any way to achieve this?
- eric
On 14 February 2010 01:52, dburns <[email protected]> wrote:
> In Python at least, GAE looks for a function called main() to enable
> app caching. Simply rename main() to something else.
>
>
> On Feb 13, 6:41 am, Eric Ka Ka Ng <[email protected]> wrote:
>> is it possible to 'disable' the app caching behavior?
>>
>> - eric
>>
>> On 12 February 2010 17:48, saintthor <[email protected]> wrote:
>>
>> > see the demo in this page:http://code.google.com/intl/en/appengine/
>> > docs/python/runtime.html#App_Caching
>>
>> > ### mymodule.py
>> > counter = 0
>> > def increment():
>> > global counter
>> > counter += 1
>> > return counter
>>
>> > ### myhandler.py
>> > import mymodule
>>
>> > print "Content-Type: text/plain"
>> > print ""
>> > print "My number: " + str(mymodule.increment())
>>
>> > do you mean if the site has not accessed for some minutes, counter
>> > will be reset to 0?
>>
>> > On 2月12日, 下午4时24分, Tim Hoffman <[email protected]> wrote:
>> >> App caching could last as little as a few minutes if your site is not
>> >> used.
>> >> In addition if multiple instances are run then only one instance will
>> >> have the counter with the correct value.
>>
>> >> You should store your obj in the datastore and cache it in memcache.
>>
>> >> module level caching is really only useful for cacheable things for
>> >> each instance,
>> >> for example compiled templates.
>>
>> >> T
>>
>> >> On Feb 12, 3:34 pm, saintthor <[email protected]> wrote:
>>
>> >> > ### mymodule.py
>> >> > counter = LargeObj()
>>
>> >> > ### myhandler.py
>> >> > import mymodule
>>
>> >> > print "Content-Type: text/plain"
>> >> > print ""
>> >> > print "My number: " + str(mymodule.counter)
>>
>> >> > if sizeof counter is greater than 1M, can it work?
>>
>> >> > if there is no request for days, will counter still be cached?
>>
>> > --
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>>
>>
>
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