ITPUB

Oct 3, 2025 · Big Data

How Qunar Travel Cut 2000 CPU Cores by Optimizing Kafka Production

This case study details how Qunar Travel's engineering team analyzed Kafka production bottlenecks during peak traffic, added targeted monitoring, tuned thread and batch parameters, and validated the changes through gray‑scale tests, ultimately saving about 2000 CPU cores across three clusters while reducing request volume and improving network and disk utilization.