Flow
public static interface Flow.Subscription
Flow.Publisher
and Flow.Subscriber
. Subscribers receive items only when requested, and may cancel at any time. The methods in this interface are intended to be invoked only by their Subscribers; usages in other contexts have undefined effects.void request(long n)
n
of items to the current unfulfilled demand for this subscription. If n
is less than or equal to zero, the Subscriber will receive an onError
signal with an IllegalArgumentException
argument. Otherwise, the Subscriber will receive up to n
additional
onNext
invocations (or fewer if terminated).n
- the increment of demand; a value of
Long.MAX_VALUE
may be considered as effectively unboundedvoid cancel()
onComplete
or onError
signal.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/concurrent/Flow.Subscription.html