Modular Monolith Architecture: The Missing Guide to Public APIs

Summary

The main theme is designing a stable public API for modules within a modular monolith to avoid tight coupling. Key subjects include the orders and shipping modules, database contexts, and integration events, with a specific example highlighting direct database coupling as a problem. The practical takeaway is that modules should communicate through defined APIs, not by directly accessing each other's data, to ensure independent evolution and prevent cascading breaking changes.