WHAT IS GOOGLE CACHE?

[websitebuildersperth]

The Google “cache” command will help you find the cached copy – the way the Web page looked when Google’s spiders indexed it - of any Web page.
This especially comes in handy if you’re looking for a Web site that is no longer there (for whatever reason), or if the Web site you’re looking for is down due to an unusually high volume of traffic

[sofia20]

It is a snapshot or a copy of a page stored by Google as a back-up. Google usually takes a snapshot of each page it examines and caches or stores that version as a back-up.

[Hilton]

Conversely, almost every site you come across while using Google will have the option of accessing the cached version right there in the search result. Clicking on “cached” will bring you immediately to the last copy Google made of that particular page...