Google’s speed guru, Ilya Grigorik, announced on Google+ that they’ve made Google mobile search a bit faster, between 100-150 milliseconds faster to be exact. That is about 0.15 seconds faster than yesterday.

How did Google do this? They are using a technique named reactive prefetch. Reactive prefetch, which Ilya explains as:

Note, this only speeds things up on Google Chrome on Android, since it is the only browser live that supports reactive prefetch. Ilya goes on to explain more of the tech behind this:

Forum discussion at Google+.