Every layout, page, and component is compiled into a module that is used internally to render the final content. Those modules are recompiled whenever a change is made, but there’s no extra layer of caching because LV is so fast that we don’t need to.
I had too much to cover in just 30m so I get that some concepts may not be so clear, the good news is that I’m recording a ThinkingElixir episode that hopefully cover some of those gaps 
