A cache is a reserved storage location that collects temporary data to help websites, browsers, and apps load faster. Whether it’s a computer, laptop or phone, web browser or app, you’ll find a variety of them.
A cache makes it easy to quickly retrieve data, which in turn helps devices run faster. It acts as a memory bank, making it easy to access data locally instead of redownloading it every time you visit a website or open an app.
Web browser cache
Whether it’s Microsoft Edge, Chrome, Firefox, or Safari, every web browser maintains its own saved data.
For example, when you visit Amazon, it downloads all the images associated with the product pages you visit, the HTML and other script files needed to render the pages, and personalization information, such as your login information and the contents of your shopping cart.
That’s why if you clear your browser saved data, retail sites will require you to log back in.
When you are building a website you can set up a system or use plugins that help you with these saved data to improve your website in SEO.