Our investigations have shown us that not all browsers respect the http cache directives in a uniform manner. Oct 25, 2012that is, even though the web server sent a new app.nocache.js, the browser seems to have ignored that and kept using its cached copy! Apr 4, 2012if your class or action didn't have nocache when it was rendered in your browser and you want to check it's working, remember that after compiling the changes you need to do a "hard.