Hi, jingfeng, I think we should have a benchmark about the sync long object map and concurrent map. Personally think the concurrent map is better, but we should have a benchmark about this two cases.
Another thing, maybe my description is problematic, we are going to replace longobjectmap and other maps such as intobjectmap. Not just longobjectmap. There also has some intobjectmap in dubbo. After the performance, @stormyu will give us that which map can be replaced. And the longobjectmap and intobjectmap has many impls (not just in netty). Could u give some ideas about this?
