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Does Akka have a built-in solution to collect answers from a Broadcast router?

The answer kind of depends on what you mean by "collecting" the answers.

If you need to aggregate them (which it sounds like you do), that would eventually need to happen in one actor. This means that your 1 million answers will all queue up on the single actor and it will become a hotspot.

If you can tolerate slightly slower reads, another possibility is to have multiple counter actors, which are themselves part of a router (lets say RoundRobin for now). This divides up the counting to multiple actors, but now to get the real total count you would have to ask all of the actors and aggregate them at read time. This strategy could be beneficial if you want to record a lot of "answers", but only read them occasionally when latency may be less important.

Categories : Java

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