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) Fri, 22 May 2026 00:00:00 GMT https://code-mill-hub.com/blog/spring-boot/2026-05-22-211621-post/ https://code-mill-hub.com/blog/spring-boot/2026-05-22-211621-post/ This post provides a deep dive into the Transactional Outbox Pattern, an indispensable architectural solution for ensuring atomicity and data consistency when updating a database and publishing events in distributed Spring Boot applications using JPA and Apache Kafka. Fri, 22 May 2026 00:00:00 GMT shflzp12@gmail.com (Maria) KafkaDistributed SystemsMicroservicesTransactional OutboxSpring BootJPABackend Architecture https://code-mill-hub.com/blog/spring-boot/2026-05-23-205829-post/ 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/2026-05-28-215909-post/ https://code-mill-hub.com/blog/spring-boot/2026-05-28-215909-post/ Explore how to manage complex business processes spanning multiple microservices. This deep dive into Saga Orchestration provides a robust solution for maintaining data consistency across distributed transactions using Spring Boot and Apache Kafka. Thu, 28 May 2026 00:00:00 GMT shflzp12@gmail.com (Maria) Spring BootKafkaDistributed TransactionsMicroservicesSaga PatternBackend Architecture https://code-mill-hub.com/blog/spring-boot/2026-06-02-120226-post/ 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 https://code-mill-hub.com/blog/spring-boot/2026-06-02-mastering-optimistic-concurrency-event-sourcing-spring-boot/ https://code-mill-hub.com/blog/spring-boot/2026-06-02-mastering-optimistic-concurrency-event-sourcing-spring-boot/ This deep dive explores how to maintain data integrity and prevent lost updates in event-sourced Spring Boot microservices by implementing robust Optimistic Concurrency Control, a crucial pattern for building resilient and consistent distributed systems. Tue, 02 Jun 2026 00:00:00 GMT shflzp12@gmail.com (Maria) JavaSpring BootEvent SourcingOptimistic LockingMicroservicesConcurrencyJPAKafka https://code-mill-hub.com/blog/spring-boot/2026-06-05-the-evolving-contract-mastering-event-schema-evolution-kafka-avro-spring-boot/ https://code-mill-hub.com/blog/spring-boot/2026-06-05-the-evolving-contract-mastering-event-schema-evolution-kafka-avro-spring-boot/ This post deep dives into solving the critical production problem of managing evolving event data structures in Kafka-based microservices, ensuring compatibility and preventing system outages through robust schema evolution strategies with Avro and Schema Registry. Fri, 05 Jun 2026 00:00:00 GMT shflzp12@gmail.com (Maria) KafkaSchema EvolutionAvroSpring BootBackend ArchitectureEvent-Driven Systems https://code-mill-hub.com/blog/spring-boot/2026-06-06-mastering-change-data-capture-debezium-kafka-spring-boot/ https://code-mill-hub.com/blog/spring-boot/2026-06-06-mastering-change-data-capture-debezium-kafka-spring-boot/ This post deep dives into implementing Change Data Capture (CDC) using Debezium, Apache Kafka, and Spring Boot to achieve robust, real-time data integration and event-driven microservices from traditional relational databases without direct application coupling. Sat, 06 Jun 2026 00:00:00 GMT shflzp12@gmail.com (Maria) DebeziumKafkaCDCSpring BootPostgreSQLEvent-Driven Architecture https://code-mill-hub.com/blog/spring-boot/2026-06-07-mastering-data-projections-microservices-read-models-spring-boot-kafka-postgresql/ https://code-mill-hub.com/blog/spring-boot/2026-06-07-mastering-data-projections-microservices-read-models-spring-boot-kafka-postgresql/ Explore the critical architectural pattern of Data Projections for building highly scalable, eventually consistent read models in microservices, leveraging Spring Boot, Apache Kafka, and PostgreSQL to optimize data access and decouple concerns. Sun, 07 Jun 2026 00:00:00 GMT shflzp12@gmail.com (Maria) Data ProjectionsRead ModelsMicroservicesCQRSSpring BootKafkaPostgreSQLEvent-Driven ArchitectureBackend Architecture https://code-mill-hub.com/blog/spring-boot/2026-06-14-mastering-resilient-event-processing-advanced-kafka-patterns-spring-boot/ https://code-mill-hub.com/blog/spring-boot/2026-06-14-mastering-resilient-event-processing-advanced-kafka-patterns-spring-boot/ Dive deep into building truly fault-tolerant, highly available event-driven microservices by mastering advanced Apache Kafka patterns like transactional producers/consumers, dead-letter queues, and robust retry mechanisms with Spring Boot 4.0 and Java 25. Sun, 14 Jun 2026 00:00:00 GMT shflzp12@gmail.com (Maria) KafkaSpring BootEvent-Driven ArchitectureMicroservicesResilienceFault ToleranceJava 25Distributed SystemsApache KafkaSpring Boot 4.0