Let's see whether our new caching strategy is working as expected. Run the application in debug mode, and then issue a request to the test.html page by typing the following URL in the browser address bar:
http://localhost:<port>/test.html
We should be able to see the updated contents with the phrase we wrote earlier; if not, press F5 from the browser to force a page retrieval from the server:
Now, without stopping the application, edit the test.html page and update its contents in the following way (updated lines are highlighted):
<!DOCTYPE html><html><head> <meta charset="utf-8" /> <title>Time for a test!</title> </head> <body> ...
