NOT just speaking of '
Youtube', but in general....
A lot of lay people don't grasp how big '
Google' is !! They imagine a 'server/servers' somewhere,
when there are huge buildings all over the globe, each filled with
thousands of computers/servers !!
Not to mention Google's ridiculously huge & complex
array of Databases, as a result of being, (in a
very simplistic analogy!), like a huge global 'Index' for 'Yellow-Pages' phone-books that was missing.
It still amazes me when I do a '
Search' for a phrase/image etc, & finds
3,600,000 results in say
.3 Sec !!!
(Although yes, that includes smart analyzing/preempting of what you type, WHILE you are typing it).
Of course some of their data is updated almost in real time, or up to 24 hrs later to update new Domain
Name Server info for new sites etc, but 'generally', (I think??), their Systems still
re-download the
ENTIRE Worlds Internet, at least once a week, to update all their servers/databases !!!
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)
No more "10 386-PC's daisy chained together in a shed" !!!
![Cool 8)](https://www.eevblog.com/forum/Smileys/default/xcool.gif.pagespeed.ic.cOxV6sPNRd.png)