.. _user-guide-vcl_actions: actions ~~~~~~~ The most common actions to return are these: .. XXX:Maybe a bit more explanation here what is an action and how it is returned? benc *pass* When you return pass the request and subsequent response will be passed to and from the backend server. It won't be cached. `pass` can be returned from `vcl_recv`. *hash* When you return hash from `vcl_recv` you tell Varnish to deliver content from cache even if the request othervise indicates that the request should be passed. *pipe* .. XXX:What is pipe? benc Pipe can be returned from `vcl_recv` as well. Pipe short circuits the client and the backend connections and Varnish will just sit there and shuffle bytes back and forth. Varnish will not look at the data being send back and forth - so your logs will be incomplete. *deliver* Deliver the object to the client. Usually returned from `vcl_backend_response`. *restart* Restart processing of the request. You can restart the processing of the whole transaction. Changes to the `req` object are retained. *retry* Retry the request against the backend. This can be returned from `vcl_backend_response` or `vcl_backend_error` if you don't like the response that the backend delivered.