Cloudflare recently launched a faster way of looking up domain names, much faster than Google.
In partnership with Cloudflare, Firefox added a new way to resolve domain names using DNS over HTTPS (DOH).
What this means is that, when you browse a web site, like https://www.somesite.com/ the query to resolve the domain name into an IP address is now carried over a secure connection, which no one will be able to see at all.
In order to configure this, if you're using Firefox 60 (Firefox Developer Edition) or later, configure it to the Trusted Recursive Resolver settings given below:
After this is done, whenever a domain name needs to be looked up, Firefox will use DOH to resolve the domain names. No one would then even know what web site (except the IP address) you're visiting at all.
See also:
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes