Service Proxy, Pod, Sidecar, oh my!
How services talk to each other?
Imagine you're developing a service... For certainty, let's call it A. It's going to provide some public HTTP API to its clients. However, to serve requests it needs to call another service. Let's call this upstream service - B.
Obviously, neither network nor service B is ideal. If service A wants to decrease the impact of the failing upstream requests on its public API success rate, it has to do something about errors. For instance, it could start retrying failed requests.
