Code Mill Hub | Backend Engineering https://code-mill-hub.com/blog/ Deep dives into Java, Spring Boot, and high-performance backend architecture. en-us shflzp12@gmail.com (Maria) shflzp12@gmail.com (Maria) Sat, 23 May 2026 00:00:00 GMT https://code-mill-hub.com/blog/spring-boot/2026-05-23-205829-post/ Ensuring Robustness: Mastering Idempotent Kafka Consumer Processing with Spring Boot and PostgreSQL https://code-mill-hub.com/blog/spring-boot/2026-05-23-205829-post/ Explore essential strategies and practical Spring Boot implementations to achieve idempotent Kafka consumer processing, eliminating duplicate side-effects and ensuring data consistency in event-driven microservice architectures. Sat, 23 May 2026 00:00:00 GMT shflzp12@gmail.com (Maria) KafkaSpring BootIdempotencyMicroservicesEvent-DrivenPostgreSQLBackend ArchitectureJava 25 https://code-mill-hub.com/blog/spring-boot/2026-06-01-223535-post/ Mastering Real-time Projections: Building Materialized Views with Kafka Streams, Spring Boot, and PostgreSQL https://code-mill-hub.com/blog/spring-boot/2026-06-01-223535-post/ In event-driven architectures, building performant and continuously updated read models from complex event streams is a significant challenge. This post deep-dives into leveraging Kafka Streams within Spring Boot to construct real-time, resilient materialized views, solving the complexities of data projection for scalable microservices. Mon, 01 Jun 2026 00:00:00 GMT shflzp12@gmail.com (Maria) Kafka StreamsSpring BootCQRSEvent-DrivenMaterialized ViewsPostgreSQLJava https://code-mill-hub.com/blog/spring-boot/2026-06-02-120226-post/ Building Stateful Microservices: Rehydrating Domain Aggregates from Kafka Event Streams with Spring Boot and JPA https://code-mill-hub.com/blog/spring-boot/2026-06-02-120226-post/ This post dives deep into a crucial pattern for event-driven microservices: how to build and maintain a service’s authoritative domain aggregates by consuming and processing events from Apache Kafka, ensuring autonomous state management and reducing inter-service coupling. Tue, 02 Jun 2026 00:00:00 GMT shflzp12@gmail.com (Maria) Spring BootKafkaMicroservicesEvent-DrivenJPABackend Architecture