Hi I have just pushed a commit that optimises DefaultExchange to use a plain HashMap for storing exchange properties instead of ConcurrentMap https://issues.apache.org/jira/browse/CAMEL-11330
The latter was introduced 8 years ago to fix/workaround an issue with the Threads EIP which we don't have today http://svn.apache.org/viewvc/activemq/camel/trunk/camel-core/src/main/java/org/apache/camel/impl/DefaultExchange.java?r1=679273&r2=679272&pathrev=679273 The plain HashMap should have smaller footprint and less object allocation overhead. And the best place to optimise Camel is around exchange/message/type converters/routing engine as they are used during routing messages. A full test has been done and it passed, but I just wanted this heads-up in case a side-effect or something is around. -- Claus Ibsen ----------------- http://davsclaus.com @davsclaus Camel in Action 2: https://www.manning.com/ibsen2
