Hello boost, Traditionally, I think of services as having a thread pool or manually managed threads to handle requests and produce responses. I have been looking at boost::asio and tbb as an alternative to this in order to take advantage of multiple cores. Also, I think that implementing an event handler with asio or tbb should provide better performance over a threadpool. Do you have any suggestions? So far, I have implemented an example using tbb::task_group and spawned tasks. This yielded full CPU utilization, but since these are very short lived tasks, the task creation overhead took over. Using io_service, it seems to be as easy as posting to the service, and running it among different threads. Would this be the correct approach for my case? Can somebody share their experiences on libraries or patterns used to implement an event handling mechanism? Thanks, Alessandro