Personal Finance Tracker (Microservices)

Tech stack: Java, J2EE, Spring Boot, REST APIs, Hibernate, JPA, Oracle 12c, PL/SQL, JWT

This project is split into two microservices:

• user-service — user registration, authentication (JWT), and profile management.
• transaction-service — expense tracking, budgets, and savings goals. Uses JWT for auth and exposes REST APIs.

Oracle 12c is used as the database for both services, with Hibernate/JPA for ORM and PL/SQL procedures for monthly summaries.

NOTE: Database credentials, secrets, and ports are placeholders. Adjust them for your environment.

Modules

• user-service
• transaction-service
• db — SQL schema and PL/SQL procedure for automated monthly financial summaries.

High-Level Architecture

• Two Spring Boot services running on different ports.
• Stateless JWT-based authentication.
• REST-based communication between microservices (transaction-service calls user-service for user validation).
• Clean layering: Controller → Service → Repository with DTOs and entities mapped via JPA.