GitHub user berg223 edited a discussion: Should we continue to use ConcurrentLongHashMap in source code?
I have write a [benchmark](https://github.com/berg223/BenchMark/blob/main/src/main/java/apache/pulsar/map/BenchMarkRunner.java) for ConcurrentLongHashMap and ConcurrentHashMap. And the result shows ConcurrentHashMap has about twice throughput than ConcurrentLongHashMap. However, there is a tradeoff that ConcurrentHashMap do have more gc count. I have upload the benchmark result in attachment file [benchmark-concurrent-hashmap.json](https://github.com/user-attachments/files/25598801/benchmark-concurrent-hashmap.json). You can visialize the result in [JMH Visualizer](https://jmh.morethan.io/). **My question: Is ConcurrentLongHashMap a better choice than ConcurrentHashMap? Should we continue to use ConcurrentLongHashMap in source code?** GitHub link: https://github.com/apache/pulsar/discussions/25271 ---- This is an automatically sent email for [email protected]. To unsubscribe, please send an email to: [email protected]
