When I access a page for the first time, it is around 0.2-0.3 seconds from the xenforo debug time. When I access the same page another time, the time is reduced to 0.04 - 0.07 seconds. I wonder why. Is it because of APC cache, or is there an Apache cache?
The fast view only works for a limited time, maybe within a half hour after the page was first loaded. After a half hour the page load is slow again for a first page view. How can I extend the time frame?