Saturday 19 July 2014

Lapsed listener problem

The lapsed listener problem is one of the primary causes of leaks in Java applications. It occurs when a subscriber (or 'listener') signs up for a publisher's event, but fails to unsubscribe.

Lapsed listener problem leads to below problems
  1. Leakage of the subscriber object.
  2. Performance degradation due to the publisher sending redundant notifications to 'zombie' subscribers.
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