Google 演算法更新？其實是 Caffeine Index 問題所導致！

I don't have all the details yet, but it seems like this was a glitch on our side and has been fixed in the meantime.

If someone could fix the other 2020-issues, that would be great.

— 🍌 John 🍌 (@JohnMu) August 11, 2020

On Monday we detected an issue with our indexing systems that affected Google search results. Once the issue was identified, it was promptly fixed by our Site Reliability Engineers and by now it has been mitigated.
Thank you for your patience!

— Google Webmasters (@googlewmc) August 11, 2020

The indexing system, Caffeine, does multiple things:
1. ingests fetchlogs,
2. renders and converts fetched data,
3. extracts links, meta and structured data,
4. extracts and computes some signals,
5. schedules new crawls,
6. and builds the index that is pushed to serving.

— Gary 鯨理／경리 Illyes (@methode) August 11, 2020

If something goes wrong with most of the things that it's supposed to do, that will show downstream in some way. If scheduling goes awry, crawling may slow down. If rendering goes wrong, we may misunderstand the pages. If index building goes bad, ranking & serving may be affected

— Gary 鯨理／경리 Illyes (@methode) August 11, 2020