The ConcurrencyThrottleInterceptor is a great bit of stuff to limit your use of heavy weight resources.
Use it simply by creating the bean:
<bean id="global_concurrency" class="org.springframework.aop.interceptor.ConcurrencyThrottleInterceptor" singleton="false"> <property name="concurrencyLimit" value="5"/> </bean>
Then weaving an aspect
<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"> <property name="beanNames"> <value>SomeThing</value> </property> <property name="interceptorNames"> <list> <value>global_concurrency</value> </list> </property> </bean>
However there is an important thing to note, which may-or-may not be completely obvious… the singleton must be set to false, otherwise you are saying that only a certain number of simultaneous invocations are allowed for all the beans you list, not just for each one individually.