Author: AJ Fisler

What is Page Caching?

What is Page Caching?

A cache, (pronounced “cash”), or page caching, is a tool utilized by devices connected to the internet as a temporary storage. This temporary storage, or “memory bank,” helps computers and other devices remember certain information to avoid re-entering the same data. Search engines, like Google, create cached pages for a type of “back-up” version of the web page, which then can be used in place of the generic web page with more personalized information. By avoiding re-entering data every time a visitor revisits your site, it helps significantly decrease the load time.

Cached pages make it easier for devices to retrieve information and data more quickly, which allows the device to run faster at greater efficiency. Caches can come in different forms, but most applications and devices have their own version for cached pages. 

Hardware and SoftwareMan looking at various shoes options over internet through digital tablet

A cache can exist in both hardware and software throughout different devices and applications. Caches in hardware are contained in the CPU, or central processing unit, for the device. This could be anything from a desktop computer, laptop, smartphone, or tablet. Each of these devices will have their own caches and cached pages. A hardware or CPU cache is usually a block of memory for the CPU to quickly and easily access frequently used information. The CPU will store data that it uses often in this cache so that it doesn’t have to load every bit and piece of information to perform a task or operation. 

Browsers and Applications

Web browsers and applications also have their own caches, separate from the CPU cache. Each different web browser, Firefox, Google Chrome, Microsoft Edge, etc, will have their own cache to store cached pages. Similar to a CPU cache, a cache for a web browser or application will store files, information, and data needed to display the web pages or relevant information being accessed. 

Whenever you visit a large retail or ecommerce website, your browser cache will download all images associated with the pages you visit, along with the script files needed to run the page, and personalized information, such as your login. If you were to clear the cached pages in your web browser, websites you have visited before will require you to re-enter your login or other information. 

Application caches work similar to web browser caches, although applications may collect more specific information for their caches. Things like videos, images, and user preferences can be stored to save memory and personalize your experience. 

Clearing Your CacheAn eraser pointing to a clear internet history option on a computer.

Since the majority of technology these days utilize caches, they can also slow down your computer or application if not cleared frequently. As we mentioned, caches store information. However, that means they can also fill up and become full. If your cache fills or is close to being filled, there will be more information for the computer or application to sift through, and therefore loading times will increase, making your device run slower. 

With this in mind, it’s helpful to clear your cache every now and then. In addition to accumulated cached pages and information, your cache may also pick up some corrupted files over time. These won’t harm your computer or device, but will prevent certain web pages and functions from operating properly. Clearing your cache will delete all the files and information stored in that cache. 

As suggested, clearing your cache will help your device or application start fresh in accumulating new information to store and cache. However, this means saved information on cached pages, such as your login or user preferences will be deleted as well. The next time you visit your favorite website, you will need to re-enter your personal information, and anything you might have had saved, such as items in your checkout basket, will be deleted as well.

While removing all the information your cache has accumulated over time seems tedious, it allows your cache to start anew, removing corrupted files and any other excess data or information that wasn’t being used and taking up space. 

Page Caching with Pegasaas

Take your page caching to the next level with our Pegasaas performance plugin! We ensure your web pages load quickly and your Time to First Byte is as fast as it can be. Visit our website or call 1-866-943-5733 today for more information!