I’ve set up dynamic loading from the server. Works great when scrolling down, but when scrolling up it has to fetch from the server every time. How do I set the buffer to be symmetrical?
You can adjust your server side code and treate “posStart” and “count” parameters in necessary way
Normally you output
<rows pos="{posStart}"
… data for row {posStart} - {posStart+count}
but you can output it as
<rows pos="{posStart-some}"
… data for row {posStart-some} - {posStart+count}
where some - count of row , which will be additionally fetched, before current position
{posStart}