Clearing sessions in mongodb, expressjs, nodejs - node.js

Question

My configuration:
app.configure(function(){
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.bodyParser());
app.use(express.cookieParser());
app.use(express.session({
secret: 'MY SECRET',
store: new MongoStore({
db: 'MY SESSION DB',
host: 'localhost',
port:88888
})
}));
app.use(everyauth.middleware());
app.use(express.methodOverride());
app.use(app.router);
});
app.configure('dev', function(){
app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
appPort = config.port; //Setting PORT to 8888 in dev mode.
app.use('/public', express.static(__dirname + '/public'));
});
app.configure('production', function(){
app.use(express.errorHandler());
appPort = config.port;
//Set cache-header-expires to 1 day
var oneDay = 86400000;
//app.use('/public', express.static(__dirname + '/public'));
app.use('/public',express.static(__dirname + '/public', { maxAge: oneDay }));
});
Now, I have a 'logout' link which goes to /logout on my app.
AFAIK, express automatically takes care of clearing sessions on logout. But with my config, I dont think its doing that. For example, A custom variable attached to session
req.session.custom
still holds after logout. However,
req.session.auth
is cleared after logout.
The number of session object in my MongoDb store are only incrementing over time. I am using everyauth as well.
What am I missing or doing wrong?

Answer 1

If you want to fully clear the session for the user on logout you can call req.session.destroy() from your everyauth.everymodule.handleLogout function. Only req.session.auth is cleared when you call req.logout().

Answer 2

why is it creating a new session in mongo store.Is there any way to
prevent it when i am redirected to login again. – loneranger Jun 7 '15 at 5:43
There's a saveUninitialized option to prevent the session to be saved if it does not contain any data.
app.use(session({
secret: 'secret123',
store: new MongoStore({
mongooseConnection: mongoose.connection,
ttl: 60 * 30 // half hour
}),
saveUninitialized: false
}));