Distributed System:
At-Most-Once semantic ensures that a given RPC request will notbe executed more than once. There is an alternative RPC semanticcalled At-Least-Once semantic, which ensures that each request isexecuted to completion. How do you implement these two semantics?For Idempotent operations, which semantic is generally moresuitable? Can you name an application scenario where these twosemantics can be used interchangeably?
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