init(): VisitServlet created
Rina: GET {}
  local=1 field=1 session=1 application=1
Rina: GET {}
  local=1 field=2 session=2 application=2
Bayu: GET {}
  local=1 field=3 session=1 application=3
Rina: GET {}
  local=1 field=4 session=3 application=4
destroy(): VisitServlet removed after 4 requests
