Kafka Tutorial: Creating a Kafka Consumer in Java - 2025 Edition
🚀 What’s New in This 2025 Update
Major Updates and Changes
- KIP-848 Protocol - Zero-downtime rebalancing (no more stop-the-world!)
- KRaft Mode - No ZooKeeper needed
- Exactly-Once Consumers - Transactional message processing
- Share Groups - New queue-like consumption pattern
- Enhanced Monitoring - Built-in lag tracking
- Cloud-Native Patterns - Container-ready consumers
Consumer Evolution Since 2017
- ✅ Smoother Rebalancing - Incremental cooperative protocol
- ✅ Better Performance - Optimized fetch and poll
- ✅ Improved Reliability - Automatic offset management
- ✅ Enhanced Observability - Detailed metrics and tracing
Ready to build modern Kafka consumers? Let’s create production-ready consumers that can handle millions of messages reliably!