Microservice architecture should never be preferred for small-scale applications.

Extra complexity: Since a microservice architecture is a distributed system, you must configure each module and database separately. In addition, as long as such an application includes independent services, they must be distributed independently.

System distribution A microservice architecture is a complex system comprising multiple services and databases, so all connections must be handled carefully. Deployment requires a separate process for each service.

The challenge of management and traceability: You must deal with multiple situations when creating a microservice application. It is necessary to be able to monitor external configuration, metrics, health-check mechanisms, and environments where microservices can be managed.

The challenge of testing: The large number of services deployed independently makes the testing process extremely difficult. Transaction management will be complex since there is more than one service and more than one database.

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