- Consumer lag: How far behind consumers are from producers.
- Partition distribution: Ensure balanced partition assignments.
- Broker health: Monitor disk space, CPU usage, and memory.
This tutorial provides a foundation for building scalable, event-driven systems with Kafka. By mastering producers, consumers, partitioning, and fault tolerance, you'll be ready to design robust architectures for real-world use cases such as order processing, logging, and analytics.