Multiple Database Configuration for Microservices in Spring Boot

Managing multiple databases within a Spring Boot microservice architecture is a common requirement, especially when following the “Database per Service” (DBPS) pattern. This guide will walk you through configuring multiple databases in a Spring Boot application, providing a step-by-step approach for MySQL and PostgreSQL integration.

Multiple Database Configuration for Microservices in Spring Boot

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Prerequisites

Before proceeding, ensure you have the following:

1. MySQL Database
2. PostgreSQL (Optional)
3. MS SQL Database (Optional)

For simplicity, we’ll configure two datasources:

• MySQL (for Organization)
• PostgreSQL (for Employee)

Create the following databases:

• organizationdb in MySQL
• employeedb in PostgreSQL

How It Works