express session + redis store

var session = require('express-session');
var RedisStore = require('connect-redis')(session);
app.use(cookieParser());
app.use(session({
    store: new RedisStore({
        client: RedisClient,
        ttl: 90000,   //session有效期 单位 秒
        prefix: game_config.redis_prefix + 'sess:',
        logErrors: true
    }),
    secret: game_dev.server_name,
    cookie: {maxAge:90000000},  //session有效期 单位 ms
    resave: false,
    saveUninitialized: true
}));
req.session.uid = userInfo._id;