To make Internet Non-Redundant, Google has removed the Cache Search Operator.

The cache: operator is no longer working on Google Search.

Google has basically replaced the Cache Search Operator with Internet Archive (Wayback Machine’s) link spotted on a search link’s “About this result” section. You can read more about it from this blog post.

After removing the removing the functionality of Cache Search Operator, Google search has also removed its documentation.

Now, to see the older version of a webpage, users have to check the Internet Archive’s link present w.r.t each search’s link.