Varnish Cache is a modern reverse proxy cache software package. It has been built from the ground up to be a dedicated reverse proxy cache so it doesn't have legacy functionality and code, making it blazing fast. It is supported on Linux and FreeBSD and is included in most popular distributions
Drupal Modules that interact with Varnish Varnish Module integrates Drupal to Varnish over the Varnish administration interface. It can purge URLs from the proxy cache using regular expressions and can display varnish statistics. Purge Module just implements purging over HTTP together with the Expire Module https://ftp.drupal.org/files/projects/varnish-7.x-1.10.tar.gz
Recent comments
It's not difficult to write JS code in an admin theme (without a module) that would save text from CKEditor to LocalStorage every X minutes and add a button to restore the text from LocalStorage...
Implementing autosave in Ckeditor 5
Another contrib module came to my mind: Save & Edit. Of course, that's also not what you had in mind - it saves to the server. But it can be helpful when the network the author's...
Implementing autosave in Ckeditor 5
... Autosave module that you mentioned, but it saves to the database I thought, that's what you're after. I am looking for is to save to localStorage...
Implementing autosave in Ckeditor 5