Need a Java map/table with multiple keys to one value. Value is commonly altered
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        Published on 2009-08-06T08:22:47Z
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            2010/06/17
            23:33 UTC
        
        
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What I need is a collection which allows multiple keys to access a single object.
I need to apply frequent alterations to this object.
It also must be efficient for 500k+ entries.
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