[Twisted-Python] Memcache client issues

Hello! I'm trying to write small tcp server, which doing some stuff with memcache. Everything was fine until I start it on production, after few minutes I got to rollback to old one. My script got max open files limit :( After liitle inspection, I saw that, new connection to my daemon opens new connection to memcache and after disconnect its not closed and on new connections is not reused. I could not find how to disconnect form memcache after processing is done, or how to reuse open connections. Maybe someone has some good example of this? Thanks!