One SEO professional was asking John about AMP pages and how they would be cached by Google.
Their main question was: will AMP pages still be cached by Google the same way that a site with an AMP version would be, and would it appear in the search results in the Google cache viewer?
they also asked: what happens if there’s an error that invalidates the page? Will it just not be shown at all in the search results?
John explained that they need to watch out for the difference between pages that are purely on AMP and pages that are this paired setup.
If a page is purely on AMP, from Google’s point of view, it’s just a normal HTML page.
So this would still be indexed normally, even if it’s an invalid homepage.
John’s understanding from the AMP format is that it would work, but he doesn’t remember all the details regarding how it works.
This happens at approximately the 7:09 mark in the video.
John Mueller Hangout Transcript
SEO Professional 3 7:09
Hi, John. I have a question about building my mobile site on AMP. So will it still be cached by Google the same way as a site with an AMP version would be and would it, you know, appear in search results in the Google Cache Viewer? And what happens if there is an error that invalidates the page, will it just not be shown at all in the search results?
SEO Professional 3 8:28
So the caching or serving it from the cache in search results may not be consistent?