Caching is a component that improves performance by transparently storing data closer to end users such that the future requests for that data can be served faster without going back to the origin server.This can be helpful to look at when you are actively building backlinks to a web page and want to know how often Google is caching that page. It is also helpful to see if Google has found your latest content changes.
Even, You can rank on Google only when Google will cache the page of your website. That is why All
SEO Teams always keep close eye on caching