Did you know you can do a Google search two times and get different results, one right after the other?
Google handles such a huge volume of searches that they have multiple data centers around the U.S. and across the world.
These data centers don’t always get the same updates at the same time. And sometimes one or more of them might be testing a new version of their software.
If you’re curious just how much difference this can make, here’s a nice tool that will query 10 Google data centers and show you all of their results. We ran a few tests and it never happened that all of them agreed.
Search Multiple Google Data Centers