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# Configure Cache Invalidation

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Using descriptor API, you can designate an object as invalid: when any query attempts to read an invalid object, TopLink will go to the data source for the most up to date version of that object and update the cache with this information. You can manually designate an object as invalid or use a `CacheInvalidationPolicy` to control the conditions under which an object is designated invalid.

For more information, see "Cache Invalidation".