Can Scala actors process multiple messages simultaneously?

Actors process one message at a time. The classic pattern to process multiple messages is to have one coordinator actor front for a pool of consumer actors. If you use react then the consumer pool can be large but will still only use a small number of JVM threads.

Here's an example where I create a pool of 10 consumers and one coordinator to front for them.

I think that the answer is that an Actor cannot handle messages aynchronously. If you have an Actor which should be listening to messages where these messages can be handled asynchronously, then it could be written like this.

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