Django Application with AWS ElastiCache, 500 Errors

Question

I setup Django Cache with Memcached (with pylibmc backend).

My settings look like this:

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache',
        'LOCATION': 'LOCATION:PORT',
    }
}

I am only caching a view using the cache_page() decorator.

From my end, everything seems to be working fine for this cached view. However, when I use Google PageSpeed Insights on the URL, every other run returns a 500 error.

My error logs don't seem to show any information. Just that 500 errors were returned for the Google PageSpeed Bot.

The website is not under heavy-load, so i don't think there is any cache stampede or similar issue involved.

Any help here, thank you.

EDIT: I noticed that when I set DEBUG=True. This problem seems to go away... but of course I cannot leave DEBUG=True.