I took the liberty of adding some notes to the Camel 3.0 roadmap https://cwiki.apache.org/confluence/display/CAMEL/Camel+3.0+-+Roadmap
See the section - Improvements to ThreadPoolProfile for thread management In fact I think we could possible make a compromise with the changes from Christian and the old/current API in the next Camel 2.9 release. A minor API change IMHO could be to move the ThreadPoolProfile from the spi package to the root package. This is to empower its importance. Also its a class now, it used to be an interface. We can make it final and serializable as well. I would be okay with this API change between 2.8 -> 2.9 as no Camel components or 3rd party components were using them to create thread pools and thus no really breakage here. The XML DSL will not be affected as the factory beans in camel-core-xml can just be adjusted accordingly. However it could also be okay to leave it as is. But its a bit odd since ThreadPoolProfile is now a class in the SPI package. SPI is really only for interfaces, for 3rd party to plugin custom behavior. As Christian noted a bit that the ThreadPoolBuilder should have been named ThreadPoolProfileBuilder. In fact why not introduced a new ThreadPoolProfileBuilder that only creates profiles. And keep the existing ThreadPoolBuilder as is. And then people can use this ThreadPoolProfileBuilder builder to create profiles, which they can use the new ExecutorServiceManager to create thread pools. Then people can pick and chose. And there is no backwards compatibility issues as old and new API can co-exist. Also as Christian noted he wanted the threads DSL to accept a ThreadPoolProfile. We can add that to the fluent builder, so you can do this from the Java DSL. (XML DSL can already support this using the executorServiceRef). So in Java DSL you can do ThreadPoolProfile myProfile = ... .threads(myProfile) Will this help Christian? -- Claus Ibsen ----------------- FuseSource Email: cib...@fusesource.com Web: http://fusesource.com Twitter: davsclaus, fusenews Blog: http://davsclaus.blogspot.com/ Author of Camel in Action: http://www.manning.com/ibsen/