update pool server

pool-server.go

@@ -59,6 +59,7 @@ func ErrorHandler(fn func(w http.ResponseWriter, r *http.Request) error) func(w
 
 func (s *PoolServer) WriteResult(w http.ResponseWriter, result *FrameWithPayload) error {
 	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Cache-Control", "no-cache")
 	w.Header().Set("Access-Control-Allow-Origin", "*")
 	w.Header().Set("X-Pod-Name", s.pod_name)
 	if result.StatusCode != 200 {
@@ -242,6 +243,7 @@ func (s *PoolServer) HandleCheckout(w http.ResponseWriter, r *http.Request) erro
 	buf.ReadFrom(res.Body)
 	w.Header().Set("Content-Type", "application/json")
 	w.Header().Set("X-Pod-Name", s.pod_name)
+	w.Header().Set("Cache-Control", "no-cache")
 	w.Header().Set("Access-Control-Allow-Origin", "*")
 	w.WriteHeader(res.StatusCode)