****************** Extending CherryPy ****************** If you need to perform some work that doesn't fit in a page handler, there are two ways to do it depending on the scope of the task. If your code needs to run on each request, or for only some URL's in your application, use a Tool. If your code needs to run elsewhere, such as process start/stop/restart/exit, or thread start/stop, use an Engine Plugin. .. toctree:: customtools customplugins