A method including displaying retrieving application code of two or more webpages of a website to render the two or more webpages on a user device. The method also can receive, via a main thread from a user device to an application server, a first request from the user device to view the first webpage on the user device. After transmitting the first and second portions of the application code to the user device, receiving, via the main thread to the application server, the second request to view the second webpage on the user device. In response to receiving the second request, facilitating, using the service worker and via a second thread from the user device to the content delivery server, a display of the second webpage on the user device using the second portion of the application code stored on the user device. Other embodiments are disclosed.