"Their performance gains are also impressive, now serving pages in under 200ms. Jeff credited the vast majority of that to their switch to holding indexes completely in memory a few years back. While that now means that a thousand machines need to handle each query rather than just a couple dozen, Jeff said it is worth it to make searchers see search results nearly instantaneously."
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgCaVB31maCJ27n6B21CCqEotb4WOVyb8aME9qJaPq8GlBKwA89iozm5T6Jo_-ynJzmaC-LMK1RdPSmtcQ6cPqzlNTbHSZYwjJ-9ufUYCZ7zmkx0SDD_6KS-g8NVsfmAYt4P-DWAKH7wHJp/s640/google-query-google-infrastructure.png)