connect-memcached is a memcached session store backed by node-memcached
var connect = require('connect')
, MemcacheStore = require('./connect-memcached');
connect.createServer(
connect.cookieDecoder(),
express.session({ store: new MemcacheStore({ memcache_host: "127.0.0.1", memcache_port: 11211})})
);