- set up an application with two backends, and sticky sessions (possibly with a specific sticky id) - the two backends send their id in the response - the client sends a request (no keep-alive) - we check that we got a sticky session cookie, and we store the id of the backend that answered - the client sends a second request, with the session cookie - we check that we got a response from the same backend - we remove all the backends and set up new ones - the client sends a third request, with the session cookie - we check that we got a response from a different backend, and a new session cookie
