try to use pylibmc if present, before memcache

authserv/server.py

@@ -64,9 +64,14 @@ def create_app(userdb=None, mc=None):
     app.userdb = userdb
 
     if not mc:
-        import memcache
-        mc = memcache.Client(
-            app.config['MEMCACHE_ADDR'], debug=0)
+        try:
+            import pylibmc
+            mc = pylibmc.Client(
+                app.config['MEMCACHE_ADDR'], binary=True)
+        except ImportError:
+            import memcache
+            mc = memcache.Client(
+                app.config['MEMCACHE_ADDR'], debug=0)
     app.memcache = mc
 
     return app