Thank you for explaining how you work, and I would never laugh at a developer for copy/pasting code. We've all done it!
I'm still intrigued to understand exactly how you share code across services. Let's say that you've written a piece of code for logging, which you want to use in both service A and service B. Do you package it up in a library? If so, doesn't that mean you have to place that library in a repository, so both services can access it? Doesn't that mean that if you want to make changes to the logging code that you now have to publish a new version of the library, and remember to update both services to depend on the new version?
That's the friction I'm talking about.
With Polylith, the logging code would live in a component that's directly accessible to all the other components in the system. That's because Polylith lets us work with all our components as if they're a monolith (even if we chose to deploy them as multiple services). This means that when we update the logging component, there's zero friction to update any impacted components in the services.
If the change only affects the logging component's implementation (and not its interface) then no other components need to be updated, and we can just redeploy the system. If it's a breaking change to the interface, then we can immediately fix the impacted components within our monolithic development environment. If the change is a refactor of the logging component's interface, then the other components will be automatically updated by our refactoring tool!
Hopefully that explains how Polylith solves this challenge so elegantly.
I package it mostly as a code. For example in C++ those would be the header file "xxx.h" ans an interface and "xxx.cpp" as implementation. If I only change the implementation there is no need for me to to touch anything else. Build system will figure out what services (executables) need to be rebuild and relinked. It will then build, deploy, run tests etc while I sit and pick my nose.
I'm still intrigued to understand exactly how you share code across services. Let's say that you've written a piece of code for logging, which you want to use in both service A and service B. Do you package it up in a library? If so, doesn't that mean you have to place that library in a repository, so both services can access it? Doesn't that mean that if you want to make changes to the logging code that you now have to publish a new version of the library, and remember to update both services to depend on the new version?
That's the friction I'm talking about.
With Polylith, the logging code would live in a component that's directly accessible to all the other components in the system. That's because Polylith lets us work with all our components as if they're a monolith (even if we chose to deploy them as multiple services). This means that when we update the logging component, there's zero friction to update any impacted components in the services.
If the change only affects the logging component's implementation (and not its interface) then no other components need to be updated, and we can just redeploy the system. If it's a breaking change to the interface, then we can immediately fix the impacted components within our monolithic development environment. If the change is a refactor of the logging component's interface, then the other components will be automatically updated by our refactoring tool!
Hopefully that explains how Polylith solves this challenge so elegantly.