Firebase load performance

问题

Simple console timing shows that fb loads much slower than desired (just 50 chat items).

load: 171.226ms
fbload: 1723.570ms 

load: 182.672ms
fbload: 2143.836ms

The normal load is from my mongodb and fbload is firebase. Despite my mongo being not denormalized fb is order of magnitude slower.

1. Is there something I can do to increase performance?

2. I'm using angularfire and I can load the initial from my own database and then replace it with the fb data. For this solution is there some way I can get the fb data to sync and bind onto existing dom elements as to avoid repainting the layout?

Code This is how I'm benching the fb time.

console.time('fbload')
$scope.chatLog = $firebase(fb.child('view/r/' + id).endAt().limit(50));
$scope.chatLog.$on('value', function () {
    console.timeEnd('fbload')
})

Edit:

My guess is that this is due to the websocket handshake. Firebase should initially just use xhr to get the data and only rely on websockets after connection. Still this needs a solution. Any ideas?

来源：https://stackoverflow.com/questions/23353991/firebase-load-performance