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Learn how to diagnose and optimize internode communication issues in Apache Cassandra 4.x through a real-world production case study in this 42-minute technical talk. Explore the challenges faced after upgrading from Cassandra 3.11, including increased p99 latency from 15ms to 50ms and kernel panic situations. Follow along as the speaker demonstrates proper internode communication setup, troubleshooting techniques, and explains the root cause of performance degradation. Discover specific optimizations like disabling compression and enabling nodelay flags that resulted in reducing p99 latency to 7ms. Gain practical insights into debugging Cassandra's non-blocking Netty communication layer to improve cluster performance.
