Keywords: modular monolith, modules, bounded contexts, ports and adapters, hexagonal architecture, module communication, data isolation, separate DbContext, MediatR, domain events, internal events, module boundaries
Organize code by modules (business capabilities), not layers. Each module is a self-contained vertical slice with its own:
The hexagonal architecture separates business logic from external concerns through ports (interfaces) and adapters (implementations).
Module organization patterns including ports and adapters (hexagonal), module communication, and data isolation. Use when structuring modular monoliths, defining module boundaries, setting up inter-module communication, or isolating database contexts. Includes MediatR patterns for internal events. Source: melodic-software/claude-code-plugins.