Publisher-policy staleness surface on the object the consumer owns after
poll().
Alias of the shared AdExpiry, which multi-format handles also carry.
Pool churn events describe pool-owned inventory only: a polled ad has
already left the pool, so those events can never identify it.
The canonical pattern is still to poll at show time: Google's guidance is to
leave ads in the SDK cache until you are ready to show. Holding a polled ad
is the consumer's risk.
Publisher-policy staleness surface on the object the consumer owns after
poll().Alias of the shared
AdExpiry, which multi-format handles also carry.Pool churn events describe pool-owned inventory only: a polled ad has already left the pool, so those events can never identify it.
The canonical pattern is still to poll at show time: Google's guidance is to leave ads in the SDK cache until you are ready to show. Holding a polled ad is the consumer's risk.