Get latest data after delete/insert operation in couchbase Node.js

I have difficult time to get latest bucket documents after any operation (insert/delete). I use node.js + express + couchbase, and here's my code, derived from its official website. it basically just a simple address book web-app and has three function: insert, show or delete contact.

After delete or insert operation, I use res.redirect("\") to reload my page. The problem is: it just show old data, only after I reload it for second time, it shows up. I just don't know what's wrong here. Can anybody help?

/* GET home page. */
router.get('/', function(req, res) {
   var query   = ViewQuery.from('view_people', 'by_id');
   bucket.query(query, function(err, results){
       return res.render('index', {people: results});
   });
});

/* INSERT Contact here */
router.post('/insert', function(req, res){
    var name    = req.body.name;
    var address = req.body.address;
    var job     = req.body.job;
    var age     = req.body.age;
    bucket.insert(name, {
    name    : name,
    address : address,
    job     : job,
    age     : age
    }, function(err, reply){
        if(err) return res.send(err);
        return res.redirect('/');
    })
});

/* REMOVE the contact */
router.get('/remove', function(req, res){
    var id = req.query.id;
    bucket.remove(id, function(err, response){
        if (err) {return res.send(err);} 
        return res.redirect('/');
    })
});

module.exports = router;