News for hackers. Stuff that matters.
Re:The Architecture Twitter Uses to Deal with 150M Active Users by harryh on Monday July 08, 2013 @07:37PM (#6010127)
That is actually a very interesting question and it turns out that whether it's better to fanout on write or on read depends on a few different things. There's a very widely read paper on the subject you might enjoy:

http://research.yahoo.net/node/3203

Re:The Architecture Twitter Uses to Deal with 150M Active Users by sumzup on Monday July 08, 2013 @10:01PM (#6010646)
The link doesn't seem to work (error: "Unable to connect to database server"); do you have an alternate link?
Re:The Architecture Twitter Uses to Deal with 150M Active Users by sheldoan on Tuesday July 09, 2013 @04:42AM (#6011701)
Not a link to the full paper, but a summary is presented here: http://highscalability.com/blog/2012/1/17/paper-feeding-fren...
Re:The Architecture Twitter Uses to Deal with 150M Active Users by Myrmornis on Tuesday July 09, 2013 @05:04AM (#6011749)
Title? Link doesn't work.
Re:The Architecture Twitter Uses to Deal with 150M Active Users by harryh on Tuesday July 09, 2013 @10:35AM (#6012859)
Huh, weird. Works fine for me. Anyways:

Feeding Frenzy: Selectively Materializing Users’ Event Feeds Authors: Silberstein, A.; Terrace, J.; Cooper, B.F.; Ramakrishnan, R.

A quick Google should turn it up for you somewhere.