Yep, so basically one request can touch hundreds of servers. It's basically the ... | Hacker News

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		niels on Dec 7, 2009 \| parent \| context \| favorite \| on: High Performance at Massive Scale: Lessons Learned... Yep, so basically one request can touch hundreds of servers. It's basically the opposite approach of Twitter. They aggregate the graphs on write.

aaronblohowiak on Dec 7, 2009 | [–]

Who is "They" in this case? Both a read and a write could be a "request", so I am having some trouble with the ambiguity of your last sentence. Thanks!

niels on Dec 7, 2009 | | [–]

Twitter is they.

niels on Dec 7, 2009 | [–]

Which also is the reason you can only have 5000 friends on FB. If you had a million friends, you'd probably touch all their servers for one request.

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