[rubyfan]

Any reference to the beacon protocol? I've never seen or heard of this. I've implemented mechanisms to periodically drain queues and clean up onbeforeunload for single page apps. Does GA's event queue span pages?

[hdhzy]

See here: https://developer.mozilla.org/en-US/docs/Web/API/Navigator/s...

The "protocol" is just a deferred HTTP POST request that does not block page unload. Please use this as it is widely supported and provides better UX (page is not blocked by sync XHR).

[lmkg]

Google Analytics documentation on transport method: https://developers.google.com/analytics/devguides/collection...

GA does not store any data that persists from page to page other than the client ID cookie.