Memcache Errors?!

[Stirman]

I implemented memcache to cache event objects for my app:
mobaganda.com

Everything seemed to work when I tested, however, out in productions,
I keep seeing these random 500 errors. When I try to duplicate, it's
totally random...

Traceback (most recent call last):
File "/base/python_lib/versions/1/google/appengine/ext/webapp/
__init__.py", line 499, in __call__
handler.get(*groups)
File "/base/data/home/apps/mobaganda/1.68/mobaganda.py", line 149,
in get
event = self.get_event(eventName)
File "/base/data/home/apps/mobaganda/1.68/mobaganda.py", line 174,
in get_event
event = memcache.get(url)
File "/base/python_lib/versions/1/google/appengine/api/memcache/
__init__.py", line 370, in get
self._do_unpickle)
File "/base/python_lib/versions/1/google/appengine/api/memcache/
__init__.py", line 188, in _decode_value
value = do_unpickle(stored_value)
File "/base/python_lib/versions/1/google/appengine/api/memcache/
__init__.py", line 251, in DoUnpickle
return self._unpickler_instance.load()
File "/base/python_dist/lib/python2.5/pickle.py", line 852, in load
dispatch[key](self)
File "/base/python_dist/lib/python2.5/pickle.py", line 1149, in
load_binget
self.append(self.memo[repr(i)])
KeyError: '0'


My logic is very simple, see if the event is cached, if so, get it..
if not, query for it.

Anyone able to extract anything meaningful from that error log?

Thanks!

[Manel]

I've had similar problems trying to cache a key with the same name of a imported module,  i've changed the key for the cached value and seems that all goes fine.

2008/6/16 Stirman <sti...@gmail.com>:

--
manel
http://www.smaider.com

[Marzia Niccolai]

Hi,
 This is a known issue with memcache.  It's being tracked at:
http://code.google.com/p/googleappengine/issues/detail?id=417

Thanks,
Marzia

[sagasw]

Stirman,

You could use try except to catch the error.
I get the error like yours too, I think it should be in appengine,
anyway, it just alpha.
Thanks,

Well

[Mattias Johansson]

Totally unreleated, but Mobaganda rocks!

/Mattias Johansson, http://appengineguy.com

[Stirman]

Thanks :)


On Jun 17, 8:08 am, Mattias Johansson <mattias.johans...@gmail.com>
wrote: