It’s a misconception that Google stores and caches every page it crawls. To begin with, one can block out the Google bots, that will obey such commands in a ‘robots.txt’ file stored at your server.
Google does not seem to store very recent content; sometimes, there is a waiting period until these are cached. Lastly, for reasons that I am not familiar with, Google will skip pages regardless of their popularity.
Making a parenthesis, to talk about back ups.
Whether you back up your web site data online or offline, make sure to check the integrity of those back ups. There is a chance that something might have failed, rendering a perfectly-looking archive quite useless.
My web host keeps daily back ups; except that something triggered the feature to be turned off. After a hardware issue that required the change of a drive, they informed me that they had to revert databases to ten days prior.
When Google did not cache one of your pages *and* your back up failed, you are left with a combination of events, that can lead to a small or larger disaster.
While I was able to recover 95% of last week’s posts, an important post about Igal Lichtman vanished for good. I have mixed feelings about its loss, as it was merely a written piece, albeit ‘from the heart’, about a friend and mentor that passed away. It almost feels like a text on a piece of paper, reduced to ashes along with one’s earthly vessel; a farewell that served its purpose.
However, I would still like to get that post back. If you happen to have stored or saved it in its entirety, I will compensate you with $100 – which you can keep or give to the charity of your choice. You can leave a comment with it pasted below, and a PayPal address. Please remember that I only need it once, so only the first such submission will be compensated.
To summarize: back ups mean nothing without verifying your data, or confirming that it’s actually there; and Google is your friend, but not 100% of the time.