At work, it was necessary to organize load balancing on two servers using dns. The concept is completely transparent and understandable, but it is not clear how to do it from a technical point of view - as far as I understand, there can be only one A-record, and the average registrar does not just add the second.
There is no time to read the specs at the moment, so I ask you to explain on your fingers what exactly I should do through the registrar.