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Yes, but I am not looking for just a multimap, I am looking for a high-performance concurrent multimap. When I checked their source code earlier today, their concurrent multimap locked the entire map, which creates a serial structure.
– Viktor Klang
Commented Sep 3, 2010 at 11:45
1

You're right about the implementation of Syncronized - it locks the whole instance - have you identified this collection as a performance bottlekneck?
– Jon Freedman
Commented Sep 3, 2010 at 12:43
2

Yes, this is as central as it gets.
– Viktor Klang
Commented Sep 3, 2010 at 14:00

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