Ticket #12399: django_memcache.patch

django/core/cache/backends/memcached.py

@@ -1 +1 @@
 "Memcached cache backend"
 
+import time
+
 from django.core.cache.backends.base import BaseCache, InvalidCacheBackendError
 from django.utils.encoding import smart_unicode, smart_str
 
@@ -34 +36 @@
     def set(self, key, value, timeout=0):
         if isinstance(value, unicode):
             value = value.encode('utf-8')
-        self._cache.set(smart_str(key), value, timeout or self.default_timeout)
+        timeout = timeout or self.default_timeout
+        if timeout and timeout > 2592000: # 60*60*24*30, 30 days
+            # See http://code.google.com/p/memcached/wiki/FAQ 
+            # "You can set expire times up to 30 days in the future. After that 
+            # memcached interprets it as a date, and will expire the item after 
+            # said date. This is a simple (but obscure) mechanic." 
+            # 
+            # This means that we have to switch to absolute timestamps.
+            timeout += int(time.time()) 
+        self._cache.set(smart_str(key), value, timeout)
 
     def delete(self, key):
         self._cache.delete(smart_str(key))