Using RedisStore in nodejs / expressjs

Question

I'm trying get access to session data in express so I thought I would try declaring a connect-redis session store when configuring express. However, I cannot see why this doesn't work:

var express = require('express');
var http = require('http');
var RedisStore = require('connect-redis')(express);

var app = express();
app.set('port', process.env.PORT || 3000);
app.use(express.bodyParser());
app.use(express.cookieParser());
app.use(express.session({ secret: "keyboard cat", store: new RedisStore }));
//app.use(express.session({ secret: "keyboard cat" }));
app.use(app.router);

app.get('/', function(req, res){
    console.log('/');
    req.session.items = [ 'apple', 'orange' ];
    res.end('items configured');
});

app.get('/items', function(req, res){
    console.log('/items: ', req.session.items);
    var s = JSON.stringify(req.session.items);
    res.end('items: ' + s);
});

var server = http.createServer(app).listen(app.get('port'), function(){
    console.log('Express server listening on port ' + app.get('port'));
});

The '/' route simply configures items with the session.

The '/items' route displays the list of items in the session.

It works using the standard expressjs session store. It doesn't work using connect-redis (req.session is undefined)

I'm assuming the redis store will be instantiated and destroyed as the app loads/unloads (or do I need it running outside of node/express app?)

Any ideas?

add node.js tag into your question to get more attention/views — thenewseattle
– thenewseattle, Commented Nov 27, 2013 at 13:41

robertklep · Accepted Answer · 2013-11-27 14:45:36Z

4

req.session will be undefined if RedisStore can't connect to your Redis server. So it's either not running, or it's not running on the default location that RedisStore is looking for it (127.0.0.1:6379).

In case of the latter, you can configure the location using the options argument to the RedisStore constructor.

answered Nov 27, 2013 at 14:45

robertklep

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1 Comment

user2964941 Over a year ago

Ah, I thought redis server was launched by node - I see it's a separate server process. I'll use expressjs MemoryStore as the store instead of running up a new server.

Shaikh Shahid · Accepted Answer · 2015-07-29 05:33:48Z

Give this a try.

var express = require('express');
var redis   = require("redis");
var session = require('express-session');
var redisStore = require('connect-redis')(session);
var bodyParser = require('body-parser');
var client  = redis.createClient();
var app = express();

app.set('views', __dirname + '/views');
app.engine('html', require('ejs').renderFile);

app.use(session({
    secret: 'ssshhhhh',
    // create new redis store.
    store: new redisStore({ host: 'localhost', port: 6379, client: client,ttl :  260}),
    saveUninitialized: false,
    resave: false
}));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));

app.get('/',function(req,res){  
    // create new session object.
    if(req.session.key) {
        // if email key is sent redirect.
        res.redirect('/admin');
    } else {
        // else go to home page.
        res.render('index.html');
    }
});

app.post('/login',function(req,res){
    // when user login set the key to redis.
    req.session.key=req.body.email;
    res.end('done');
});

app.get('/logout',function(req,res){
    req.session.destroy(function(err){
        if(err){
            console.log(err);
        } else {
            res.redirect('/');
        }
    });
});

app.listen(3000,function(){
    console.log("App Started on PORT 3000");
});

link : https://codeforgeek.com/2015/07/using-redis-to-handle-session-in-node-js/

Ben · Accepted Answer · 2015-07-10 15:33:29Z

0

You should invoke RedisStore constructor (with ())

app.use(express.session({ secret: "keyboard cat", store: new RedisStore()}));

edited Jul 10, 2015 at 15:33

Ben

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answered Nov 27, 2013 at 14:41

Andrei Karpuszonak

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2 Comments

robertklep Over a year ago

I do prefer the parentheses too, though. If only to shut up jshint ;)

user2964941 Over a year ago

Yeah - prefer () myslef but copied/pasted code from somewhere else.

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