Answer Posted / Sanam Singh
The Lapsed Listener problem occurs when a subscriber is unregistered from an event after it has already been notified. This can lead to unexpected behavior, as the subscriber may receive multiple copies of the event or miss subsequent events entirely.nnFor example, consider an event that sends emails for new orders. If a subscriber registers and immediately unregisters after receiving the first email (before the next order arrives), the Lapsed Listener problem can occur if the event is triggered again without checking whether the subscriber is still active.
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