Update server.go

Add hint on using buffered channel for signal.Notify

Author: lammel

cookbook/graceful-shutdown/server.go

@@ -27,8 +27,8 @@ func main() {
 		}
 	}()
 
-	// Wait for interrupt signal to gracefully shutdown the server with
-	// a timeout of 10 seconds.
+	// Wait for interrupt signal to gracefully shutdown the server with a timeout of 10 seconds. 
+	// Use a buffered channel to avoid missing signals as recommended for signal.Notify
 	quit := make(chan os.Signal, 1)
 	signal.Notify(quit, os.Interrupt)
 	<-quit