How does gRPC work? A quick Google search would tell you that it uses HTTP/2.0 under the hood, but that’s about it. Most available guides talk about gRPC internals by assuming that you are already deeply familiar with HTTP/2.0, and the only proper documentation for HTTP/2 is the official RFC document, which doesn’t contain implementation details, and talks in abstract terms.

When it comes to testing software applications, various testing techniques can be employed. Three common testing methods are unit testing, integration testing and end-to-end testing. All these different kinds of testing overlap, so you just can’t implement one or two forms of testing and you will be good. Like if you are in the initial stage of development you can write a few unit tests which a developer can run once he makes changes to a function.