architecture-monolith
Architecture Monolith
Overview
Use this skill to design modular monoliths that preserve internal autonomy without introducing distributed-system overhead.
Scope Boundaries
- Product scope or team size favors a single deployable unit.
- Cross-domain workflows require strong transactional consistency.
- Operational simplicity is a top constraint.
Core Judgments
- Module boundaries: domain cohesion and dependency direction inside one codebase.
- Internal contracts: which module APIs are allowed and how enforced.
- Data ownership in shared database: logical ownership and write access discipline.
- Future extraction seams: where boundaries should support later service splits.
Practitioner Heuristics
- Treat modules like products with stable public interfaces.
- Forbid cross-module database writes except through explicit module APIs.
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