hi. i have weird caching problems with the 1.3 version of django. I probably have something configured wrong, but am not sure what.
A good example is django-avatar, which uses caching and many people use it. Even if I dont have a cache backend defined the avatar seems to be cached, which by itself would be ok, but it keeps switching back and forth between the last values cached. Example: I upload a new avatar, now on approximately 50% of the requests it will show me the new one, 50% the old one. If I delete the old one I still get it on the site 50% of the time. The only way to fix it is to disable the caching of the avatar by setting it to one second. First I thought it was because i used django.core.cache.backends.locmem.LocMemCache, which I never used before, but it even happens when I dont configure a cache backend at all. I found one similar bug: http://stackoverflow.com/questions/4888470/django-caching-bug-even-if-caching-is-disabled but my pages render just fine, its the templatetags (for now) that cause the problems in my setup. I use django 1.3, postgres, nginx, gunicorn 0.12.0, greenlet==0.3.1, eventlet==0.9.16 I just did some more testing and realized that it only happens when I start gunicorn using the config file. If I start it with ./manage.py run_gunicorn everything is fine. Running "gunicorn_django -c deploy/ gunicorn.conf.py" causes the problems. The only explanation I can think of is that each worker gets his own cache (I wonder why, since I did not define a cache). Update: running ./manage.py run_gunicorn -w 4 also causes the same problems. Therefore I am almost certain that the multiple workers are causing the problems and each worker caches the values seperately. My configuration: import os import socket import sys PORT = 8000 PROC_NAME = 'myapp_gunicorn' LOGFILE_NAME = 'gunicorn.log' TIMEOUT = 3600 IP = '127.0.0.1' DEPLOYMENT_ROOT = os.path.dirname(os.path.abspath(__file__)) SITE_ROOT = os.path.abspath(os.path.sep.join([DEPLOYMENT_ROOT, '..'])) CPU_CORES = os.sysconf("SC_NPROCESSORS_ONLN") sys.path.insert(0, os.path.join(SITE_ROOT, "apps")) bind = '%s:%s' % (IP, PORT) logfile = os.path.sep.join([DEPLOYMENT_ROOT, 'logs', LOGFILE_NAME]) proc_name = PROC_NAME timeout = TIMEOUT worker_class = 'eventlet' workers = 2 * CPU_CORES + 1 ----------------------------------- I also tried it without using 'eventlet', but got the same errors. Thanks for any help. Philipp -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
