app.param(['id', 'page'], function (req, res, next, value) {
console.log('CALLED ONLY ONCE with', value)
next()
})
app.get('/user/:id/:page', function (req, res, next) {
console.log('although this matches')
next()
})
app.get('/user/:id/:page', function (req, res) {
console.log('and this matches too')
res.end()
})