Cloud Native Applications with Ballerina

Chapter 5: Accessing Data in Microservice Architecture

In this chapter, we will focus on accessing the database by using the Ballerina language with respect to monolithic 3-tier architecture-based applications. In the 3-tier architecture model, application logic is contained in the application layer. Single-database access for the entire system and database transaction queries are implemented in the application layer. Building an application that runs in a single database is simpler since we can join tables to query results. A microservice architecture, however, forces developers to have a database for each service. Therefore, we need to come up with a more scalable solution to handle problems related to data consistency in database per service ...