Microservices are analogous to classes from OOP: an attempt at modularization by bundling function, internal state and side-effects together. So it suffers fro

Microservices are analogous to classes from OOP: an attempt at modularization by bundling function, internal state and side-effects together. So it suffers from the same challenges. It’s worse in fact, as the message passing now involves unreliable I/O, and the internal state is also shared global state. The main reason it exists is because of the availability of cheap commodity hardware for servers (and later cloud), which breaks the model of programming for vertical scaling afforded by the mainframe model. It’s out of necessity to scale cheaply that this architecture is followed - the rationalizations that this is a superior way for teams to work together or that it improves reliability can be argued.