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) Fri, 03 Jul 2026 00:00:00 GMT https://code-mill-hub.com/blog/spring-boot/2026-07-03-mastering-zero-downtime-data-migration-schema-evolution-spring-boot-kafka-postgresql/ Zero-Downtime Schema Migration with Spring Boot, PostgreSQL, and Kafka https://code-mill-hub.com/blog/spring-boot/2026-07-03-mastering-zero-downtime-data-migration-schema-evolution-spring-boot-kafka-postgresql/ Plan an expand-migrate-contract rollout for PostgreSQL and Kafka with compatible Spring Boot deployments, chunked backfills, transactional outbox or CDC, validation gates, and safe cleanup. Fri, 03 Jul 2026 00:00:00 GMT shflzp12@gmail.com (Maria) Schema MigrationSpring BootPostgreSQLApache KafkaFlywayDebezium