Can you please provide us with a more detailed description of what happens?
What do you mean by "snapshot"?
Sorry for the unclear question, just ignore the "snapshot" thingy. What I mean here is once I refresh the page after some period, all the data that suppose to be displayed is all gone.

What I did is after the page has displayed all the pushed data, I just leave it there and after sometimes I refresh the page again (shortest time was around 3+ mins), it appeared to be blank. It shows nothing and the data that I pushed previously didn't show on the page.