Maintaining Modularity in Microservices or Modules

When aiming for modularity in microservices or modules, it is crucial to avoid tight coupling between modules. Sharing the same database, specifically having modules share the same data model within the database, can lead to tight coupling and hinder independence. To maintain modularity, it is important to ensure that modules have separate schemas in the same database server. Consultants proposing a setup where multiple modules or microservices share one data model should raise red flags as it can result in tightly coupled components.