Although it might be the most popular web browser in the world, Google Chrome is also famous for being a pig resource, especially when it comes to memory and batteries. Some also feel that Chrome can be rather slow or even slow, especially because of the number of tabs and sites that you keep. Of course, Google has also taken steps to make chrome on the desktop faster and the newest trick is to make your page load faster by keeping it longer in the browser cache.
Google calls this back cache feature or bfcache and is actually not new. This feature was introduced on Android back in January with the chrome version 88 release for the cellular platform. Google now plans to introduce the same features for Windows, Mac, and Linux starting in a few months.
What BFCache does practically store pages for a little longer after the user moves from it or close it. On Android, this creates a web page seems to load instantly when the user cancels the tab closed or back and advanced in history. For cellular devices that may have limited bandwidth or data close, this can have a large cost savings and time.
On the desktop, such limitations may not always be there but it is still good to be able to jump to the page back and forth in history without waiting for them to load their content. It also provides a feeling of the browser that as fast as that, even if it really uses the trick behind the scenes.
BFCache for Chrome on the desktop is still experimental and will start with the version 92 browser. Both users and developers do not need to do anything to use it but Google will also offer a way for the site administrator to further optimize their site for it. Google also ensures that the pages in the cache are frozen and no JavaScript is allowed to run to prevent security potential and click performance.