What is Cache? 

The Word "Cache" is French and basically means "a hidden place." 

In the tech world Cache is hidden, short-term storage or memory of some item a computer has retrieved. 

The most common use of Cache memory storage today happens in a web browser. When you go to a web page there are lots of individual files that make up a page including HTML, Images, CSS, Javascript,  fonts. For any single page there can be dozens of files. If you visit that page again or visit another similar page in the same website your web browser will store some of these items in this hidden memory called Cache. Cache is one of the many ways your browser tries to make your web surfing experience faster. 

Cache is also used by the computers that serve web pages to you. These server computers use lots of fast access memory to store copies of web pages and their associated files. The cache can dramatically speed how fast a website loads once someone has requested it. 

Cache memory is cleared occasionally to accommodate changes in a website, like a new blog post or product loaded into the website. Cache systems even exist within a website's Content Management System to speed things at every level. 

Why Does it Matter? 

Speed is one of the most important factors in the success of a website, and Cache makes things faster. To get the most out of a website, developers and hosting providers should use aggressive caching and Content Delivery Networks to keep sites from loading slowly. 

If your website is experiencing slowness, then you just might need more Cache.