1.2B reads / sec from a hash map in a single JVM on a machine with several hundred CPUs. That aggregate throughput is probably a record for any hash table running anywhere on any hardware. - Sanjeev Singh

In case you want the slides, you can find them here http://developers.sun.com/learnin... - Shakeel Mahate

I watched this talk when it was first released and by fall last year wondered why Cliff Click's data structure hadn't seen inclusion to the jdk or at least wider adoption. I asked jjb during one of our weekly concurrency meetings and learned that some unexpected problems had crept up in the meantime. - Mustafa K. Isik

I watched this talk twice by video and once live at JavaOne. I still didn't understand one component until speaking with Cliff at the conclusion of his live talk. I'm not surprised it's not yet part of the JDK; I suspect it requires a significant acceptance prior to its inclusion, given that it's so new. Of course, I don't claim to understand JCP, nor have I followed updates to this hash map since J1 '07. - Robert Konigsberg