budget-backend is a full-featured Spring Boot service providing RESTful CRUD endpoints for budgets, expenses, users, customers, orders, tasks, and transactions. It combines NoSQL (MongoDB) for user-driven collections with relational storage (PostgreSQL via Spring Data JPA) for audit-quality transaction logs and analytics.

• Resource Management
  • Budgets & Expenses stored in MongoDB for flexible, schemaless data
  • Users, Customers, Orders, Tasks, Transactions in PostgreSQL for ACID compliance
• Seven Ready-to-Use Entities
  • CRUD controllers under /api/{resource} for all seven domains
  • Service layer with business logic isolation
  • Repository interfaces for easy extension
• Authentication & Security
  • JWT support baked in via jjwt (0.9.1)
  • Ready to integrate Spring Security for protected routes
• Caching & Performance
  • Redis integration for session and query caching
  • Asynchronous request handling for high throughput
• Messaging & Events
  • RabbitMQ and Kafka clients included for future event-driven workflows
• Search & Analytics
  • Elasticsearch client scaffolded for full-text expense search and reporting
• DevOps & Observability
  • Dockerfile & Docker Compose for one-command local spin-up
  • Prometheus metrics exporter and Grafana dashboard templates
  • Jenkins pipeline example for CI/CD

• Initial Release of core budget management backend
• All seven domain models fully implemented with DTOs, validation, and mapping
• Swagger/OpenAPI docs auto-generated at /docs
• GraphQL endpoint enabled at /graphql for flexible queries
• WebSocket notifications for real-time expense and order events
• Complete environment variable configuration for easy deployment

1. Spring Boot Starter Web — REST API foundation
2. Spring Boot Starter Data JPA + PostgreSQL Driver — relational data layer
3. Spring Boot Starter Data MongoDB — NoSQL collections
4. io.jsonwebtoken:jjwt (0.9.1) — JWT utilities
5. org.projectlombok:lombok — boilerplate reduction
6. org.springframework.boot:spring-boot-starter-test — testing framework
7. Redis, RabbitMQ, Kafka, Elasticsearch clients (scaffolded in services)

<dependency>
  <groupId>com.github.hoangsonww</groupId>
  <artifactId>budget-backend</artifactId>
  <version>1.0.0</version>
</dependency>

mvn clean install

docker build -t ghcr.io/hoangsonww/budget-backend:1.0.0 .
docker run -e SPRING_PROFILES_ACTIVE=prod \
           -e MONGO_URI=mongodb://host:27017/budget_manager \
           -e POSTGRES_URL=jdbc:postgresql://host:5432/budget_manager \
           -e JWT_SECRET=yourSecretKey \
           -p 8080:8080 \
           ghcr.io/hoangsonww/budget-backend:1.0.0

• Swagger UI: http://localhost:8080/docs
• GraphQL Playground: http://localhost:8080/graphql
• WebSocket Endpoint: ws://localhost:8080/ws/notifications

• License: MIT
• Author: Son Nguyen (hoangsonww)
• Issues & PRs: welcome on GitHub

Build your frontend or CLI on top of this stable, production-ready backend foundation!