while playing with a Phalcon tutorial I observed that when navigating it only made one get file request from server event if where inluded more files in HTML.
http://188.240.2.29:20005/
if you navigate between menus one GET is made only, when refresh page with F5 additional files are called.
Same thing i observed with other websites: StackOverflow has 9 files called while with F5 there are 29, Reddit normally has 15 files called wile with F5 refresh 35 files are called.
I want to know how this is achieved and how it can be implemented in other websites.