When should you use replay(1).refcount()?

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JZX2021-08-13 15:28:20

Java

JZX, 2021-08-13 15:28:20

I heard that when there are several subscriptions to one ConncentableObservable, it is necessary to use replay(1).refcount() because sometimes the data may not reach some subscriptions.
For what reasons can this happen? How can this situation be implemented in code?

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