On another question I received the following advice:
Create a module drupal generate:module, create the route subscriber drupal generate:route subscriber and to look up the route name of the view drupal router:debug
setting an Expires Response Header
How can I Do that? Composer and Console are running with Acquia-dev-desktop. I've created a first "mymodule" with "implement method: hello". So I have come a lot further than I was yesterday.
Do you have a guide for me?
PS: I discovered the module "Advanced Page Expiration". This will probably only be for pages, not for blocks?