Tech Dung
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Hello everyone in the developer community! 👋 I'm a backend developer with 3 years of experience in building scalable and maintainable systems.
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This is my very first product – a small starter project built based on the clean architecture structure I use in real-world projects. Though it’s simple, I’ve made sure it follows professional patterns and is easy to understand and extend.
🔹 Tech Stack Highlights:
Hexagonal Architecture (Ports & Adapters)
Spring Boot (Kotlin)
Kafka integration
JOOQ + PostgreSQL
Docker Compose-ready
I hope you enjoy it, and thank you so much for your support!
🎯 What’s next if I get your support?
Deeper dive into Hexagonal Architecture patterns
More Kafka use cases (event-driven, command, notification...)
More complex real-world project structures
Thank you for checking out my first product – stay tuned for more! 🚀
Project structure:
a_spring_hexagonal_jooq_kafka_project/
├── category-backend/
│ ├── build.gradle.kts
│ ├── gradlew
│ ├── gradlew.bat
│ ├── gradle/wrapper/...
│ ├── settings.gradle.kts
│ ├── README.md
│ └── src/
│ ├── main/
│ │ ├── kotlin/com/example/categorybackend/
│ │ │ ├── CategoryBackendApplication.kt
│ │ │ ├── adapter/
│ │ │ │ ├── api/
│ │ │ │ │ ├── CategoryController.kt
│ │ │ │ │ └── CategoryDTOs.kt
│ │ │ │ └── db/
│ │ │ │ └── JooqCategoryRepository.kt
│ │ │ ├── domain/
│ │ │ │ ├── model/
│ │ │ │ │ └── Category.kt
│ │ │ │ └── port/
│ │ │ │ └── CategoryRepository.kt
│ │ │ ├── infrastructure/
│ │ │ │ └── JooqConfig.kt
│ │ │ └── usecase/
│ │ │ ├── CategoryUseCase.kt
│ │ │ └── CategoryUseCaseImpl.kt
│ │ └── resources/
│ │ ├── application.yml
│ │ └── db/migration/
│ │ └── V1_create_category_table.sql
│ └── test/... (empty basic test structure)
├── product-backend/
│ ├── build.gradle.kts
│ ├── gradlew
│ ├── gradlew.bat
│ ├── gradle/wrapper/...
│ ├── settings.gradle.kts
│ ├── README.md
│ └── src/
│ ├── main/
│ │ ├── kotlin/com/example/productbackend/
│ │ │ ├── ProductBackendApplication.kt
│ │ │ ├── adapter/
│ │ │ │ ├── api/
│ │ │ │ │ ├── ProductController.kt
│ │ │ │ │ └── ProductDTOs.kt
│ │ │ │ ├── db/
│ │ │ │ │ └── JooqProductRepository.kt
│ │ │ │ ├── http/
│ │ │ │ │ └── RemoteCategoryServiceAdapter.kt
│ │ │ │ └── kafka/
│ │ │ │ └── KafkaProductEventProducer.kt
│ │ │ ├── domain/
│ │ │ │ ├── model/
│ │ │ │ │ ├── Product.kt
│ │ │ │ │ └── event/
│ │ │ │ │ └── ProductCreatedEvent.kt
│ │ │ │ └── port/
│ │ │ │ ├── CategoryServicePort.kt
│ │ │ │ ├── ProductEventPublisher.kt
│ │ │ │ └── ProductRepository.kt
│ │ │ ├── infrastructure/
│ │ │ │ ├── AppConfig.kt
│ │ │ │ ├── JooqConfig.kt
│ │ │ │ └── KafkaConfig.kt
│ │ │ └── usecase/
│ │ │ ├── ProductUseCase.kt
│ │ │ └── ProductUseCaseImpl.kt
│ │ └── resources/
│ │ ├── application.yml
│ │ └── db/migration/
│ │ └── V1_create_product_table.sql
│ └── test/... (empty basic test structure)
├── docker-compose.yml
└── init-db.sh
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