How to Split a Monolith Database Gradually Without Breaking Joins
Learn how to split a monolith database by mapping joins first, assigning table ownership, and migrating one reversible stage at a time with safe rollbacks.
15 min read
Tag
data ownership
Joining Data Across Microservices: API Composition vs. Read Models
Learn when to join data across microservices at request time with API composition or ahead of time with CQRS read models, and what each costs to run.
16 min read
How to Split a Shared Database Safely in a Monolith Migration
Split a shared database by separating ownership first: map coupling, isolate schemas, pick CDC, outbox or dual writes, then cut over with rollback at each step.
14 min read
Modular Monolith Database Design: Schemas, Ownership and Foreign Keys
Design a modular monolith database in PostgreSQL: schema per module, enforced data ownership, cross-module foreign keys, safe cross-module queries and migrations.
14 min read
Database per Service: Data Ownership, Trade-offs and Pitfalls
Learn what database per service means, why shared databases break microservices, and how sagas, outboxes and read models handle the costs it brings.
14 min read
Modular Monolith Architecture: Boundaries, Data Ownership and Rules
Learn how to design a modular monolith: drawing module boundaries, enforcing data ownership and dependency rules in CI, testing, and when to extract services.
13 min read