Google's BigDaddy Update
For the past couple of months, Google has been conducting an algorithm test, dubbed "BigDaddy". This test is currently live in 3 datacenters (66.249.93.104, 64.233.179.104 and 216.239.51.104).
Google datacenters (DCs) house all the pages Google has crawled on the Internet. These pages become cached pages. For example, if you conduct a search for "ebay canada" right now, you'll see which DC crawled and cached ebay.ca: http://72.14.207.104
The cached content is what Google uses to judge whether a page is a relevant match for a query.
When rankings differ between DCs, it's an indicator of a potential algorithm update (The term Google Dance comes from the fact that rankings seem to "dance around" and differ between DCs).
What's the implication of BigDaddy? According to Matt Cutts, the algorithm test will be applied to all DCs, resulting in an algorithm update. Therefore, website rankings may experience fluctuations in the next month or so.
BigDaddy seeks to:
- Reduce canonicalisation (A Google term for instructing a search engine how to decide which of a series of related URLs is the proper one to insert into the Google index.)
- Eliminate 302 redirect issues.
- Reduce webspam.