Why use key-partitioning and key-associator features?

Why use key-partitioning and key-associator features?
What kind of applications are suitable for using key-associator and key-partitioning features?
Could you give me some example?
Thank you

So the typical way is to use KeyAssociation. This is a single interface that uses a method
public Object getAssociatedKey();
I believe this works on the ClusterService level (rather than say the Cache). So, say you have a Client and an Account cache where a Client can have multiple Accounts. Now both the Client and the Account object will implement KeyAssociation and return the client object as the AssociatedKey. This will cause these associated objects to live on the same partition.
Now you can do some clever tricks since you know these are on the same partition. These include using the BackingMap and EntryProcessors / InvocationService / Aggregators to return all the AccountIds associated with a client account (essentially a join).
Unfortunately, these are pretty advanced Coherence features so it is worth building them in a testcase first and getting them to work before you integrate them into your application.
Best, Andrew.
PS. You could also use the KeyPartitioningStrategy, but I prefer the KeyAssociation (as do most people).

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JDeveloper11g_
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zakir
===

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I have found a solution!
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Message was edited by: Murali

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Please click "Accept as Solution" if your problem is solved.
Signature:
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HP 10 Plus; Android-Kit Kat; 1.0 GHz Allwinner A31 ARM Cortex A7 Quad Core Processor ; 2GB RAM Memory Long: 2 GB DDR3L SDRAM (1600MHz); 16GB disable eMMC 16GB v4.51
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Intelligence is God given; Wisdom is the sum of our mistakes!
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null

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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by vijay kumar ([email protected]):
Are u running ur application in web?
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<HR></BLOCKQUOTE>
null

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Why use key-partitioning and key-associator features?

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