Here is one for you. We had a database crash, and was down for an hour and 15 minutes, on Dec 18th. During this time our system automatically sent out a 301 redirect to our product home page. (iboats.com/boat-parts-accessories/dm/)
On Dec 24th I noticed a huge ranking drop on a lot of our keywords, and some keywords that were serving up the redirect page from our database crash, in place of its normally ranked page.
So my assumption is that Google was crawling our site during the database crash and caching the redirect pages in place of our regularly ranked pages. So when a search query is made that would normally display our ranked page, it is now displaying the redirect page from the crawled cache.
And on other keywords where we normally would rank for, Google no longer has that page cached, so it drops it from ranking.
My question: Does this assumption sound accurate? If so, I'm assuming over time that our past ranked pages will show up once again after Google recrawls those pages and saves them in their cache.
I have several sites that were affected with this:
Thanks in advance for your input