RPC systems come in many different levels like programming languages. While there are low level RPC systems which are just a simple layer around web requests, t

RPC systems come in many different levels like programming languages. While there are low level RPC systems which are just a simple layer around web requests, there are others that do a lot more. They can do retries, host selection, and stateful operations like the article mentions. These systems tend to take care of a bunch of easy to mess up logic which tends to be accumulate around any system that wants to send something and not mess up. Any sufficiently old web request system tends to look identical to a high level RPC system designed badly. So choosing an RPC system should give you all the features you’d eventually end up building around using web requests without spending your time rewriting it.