https://sudonull.com/kafka-kraft-practice-spring-boot-microservices
Deploy Kafka cluster on KRaft, integrate with 4 Spring Boot services. Full producer/consumer code, docker-compose, topics with retention. For middle/senior dev.
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https://sudonull.com/avro-and-schema-registry-in-kafka-practical-setup
Setting up Apache Avro with Schema Registry in Kafka cluster: docker-compose, class generation, serializers for producers/consumers. Transition from JSON to typed schemas. Instructions for middle/senior developers.
https://sudonull.com/spring-framework-2026-courses-analysis-for-java-developers
How to Choose a Spring Framework Course in 2026? Comparison of 5 Programs by Technical Depth, Salary Prospects, and Production Practices. Learn the Key Criteria.
https://sudonull.com/spring-batch-for-excel-reports-without-timeouts
Learn how Spring Batch solves the generation of hundreds of Excel files asynchronously. Step architecture, progress, code examples. Scale reports without blocking — read the guide for Java developers.
https://sudonull.com/java-developer-roadmap-from-scratch-free
Gain junior Java backend skills with Spring in 8–10 months. Free courses, Git, Docker, Kafka. Pet projects and chats for practice. Start now!
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