10.5. The concurrency client API

You can use the concurrency client API directly from Java code, which means you’re in full control of what should happen. You don’t have to use Camel routes and EIPs to achieve concurrency.

To fully understand the concurrency API from the client point of view, we’ll look at how you can achieve concurrency with pure Java. Then we’ll look at the same example using Camel’s ProducerTemplate. We’ll end this section by looking at how the Camel client API allows you to easily submit concurrent messages to different endpoints and leverage a callback mechanism to gather the replies when they come back.