How do dynamic backends start in Google App Engine

Question

Can we start a dynamic backend programatically? mean while when a backend is starting how can i handle the request by falling back on the application(i mean app.appspot.com).

Answer 1

Backends are documented quite thoroughly here. Backends have to be started and stopped with appcfg or the admin console, as documented here. A stopped backend will not handle requests - if you want this, you should probably be using the Task Queue instead.