[jnash]

Nothing you say can't be accomplished by using libraries instead. The largest software on earth (Linux/Windows/...) is created by composing thousands of libraries into a single system. With thousands of developers contributing from all over the world. It works. It's proven.

[throwaway894345]

Composing libraries offers some of the advantages of microservices, but not all of them. For example, a vulnerable library still has access to all of the secrets used by any other library, whereas a vulnerable microservice will only yield the secrets it needs. Similarly, a critical bug in one library can bring the whole process down, even if the library itself is a non-critical component—a critical bug in a microservice will only tank that service (and maybe services that depend on it if they don’t degrade gracefully). Notably, Linux and Windows spend tremendous energy making sure these vulnerabilities and bugs don’t slip through!