id,summary,reporter,owner,description,type,status,component,version,severity,resolution,keywords,cc,stage,has_patch,needs_docs,needs_tests,needs_better_patch,easy,ui_ux 10016,Cache middleware with memcached can't handle long URLs,Jacob,mcroydon,"Memcached has a hard limit of 250 characters for cache keys ([http://code.sixapart.com/svn/memcached/trunk/server/doc/protocol.txt cite]). However, cache keys for the cache middleware (and associated view decorators) are of the form {{{ 'views.decorators.cache.cache_page.%s.%s.%s' % (key_prefix, request.path, headers_hash) }}} ([http://code.djangoproject.com/browser/django/trunk/django/utils/cache.py#L146 cite]) This means that if the combined length of {{{settings.CACHE_MIDDLEWARE_KEY_PREFIX}}} and {{{request.path}}} is over about 180 characters, you'll get failures. With cmemcache you get obscure server errors; the pure-Python memcached client throws {{{MemcachedKeyLengthError}}}. ",,closed,Core (Cache system),dev,,fixed,,,Accepted,1,0,0,0,0,0