What is Cache?
Cache-A file that used to reduce loading times when browsing previously visited websites. This could also store preferences for using some services to provide a more convenient experience.
So, review what the browser cache is and why it exists. I’ll also point you to steps to clear it in Edge, Internet Explorer, Firefox, and Chrome, and try to dream up some reasons why that sometimes helps. The cache exists because of a basic assumption made by browser designers: the internet is slow.
More Precisely, your internet connection is slower than your computer.
It’s faster to get something from your hard disk than it is to get it from the internet. Even with today’s internet speeds, that still holds true.
Browser designers noticed that most websites have many of the same elements on multiple pages. For example, if you look at this page, you’ll see the MV3 Marketing logo at the top. It’s at the top of every page on this site. So, the thinking was, why download the same logo over and over for every page? Why not just download it once and then keep a copy so we can display it again without downloading it every time?
That’s the browser cache. It’s nothing more than a place on your hard disk where the browser keeps things it downloaded once in case they’re needed again.
The very first time you visit any page on this site, the browser downloads the logo, and several other items, into the cache, and then displays it as part of the page you’re viewing. For each additional page, you visit, if the same logo is displayed, it doesn’t need to be downloaded again — it’s already on your hard disk.
The cache has a size limit, which you can usually configure. When the cache gets full, the items in it that haven’t been used in a while are discarded to make space for items you’re using now.
Naturally, there’s more to it than that. For example, there are ways for me to update the logo on my site and have that override whatever is in your cache, so what you see is always up to date. But by and large, that’s all it is: a place to keep things locally so you don’t have to download the same things repeatedly.
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