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In Java DSL you can configure the default thread pool profile from the ExecutorServiceStartegy which you access from CamelContext.

Using thread pool profiles

Suppose you want to use a custom thread pool profile for a Multicast EIP pattern in a Camel route you can do it using the executorServiceRef attribute as shown:

<camelContext ...>
    ...
    <threadPoolProfile id="fooProfile" 
                       poolSize="20" maxPoolSize="50" maxQueueSize="-1"/>
    ...

    <route>
       ...
       <multicast strategyRef="myStrategy" executorServiceRef="fooProfile">
          ...
       </multicast>
      ...
    <route>
</camelContext>

What Camel will do at runtime is to lookup in the Registry for a ExecutorService with the id = fooProfile. If none found it will fallback and see if there is a ThreadPoolProfile defined with that id. And in this example there is and so the profile is used for creating a new ExecutorService which is handed back to the Multicast EIP to use in the route.

Create custom thread pool

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