Facebook Chat Architecture

For those interested in building scalable systems, today I will speak about the Facebook Char architecture. Starting keynote:

''When your feature’s userbase will go from 0 to 70 million practically overnight, scalability has to be baked in from the start.''

Eugene Lutuchy, lead engineer on Facebook Chat

Comments

[Rob Friedman]

Chat not Char.

Since Facebook is all crazy for erlang why did they not integrate ejabberd?

[Anonymous]

The post seems to just be ripped verbatim from the original:

http://www.facebook.com/note.php?note_id=14218138919&id=9445547199&index=9/mos

[Anonymous]

Char = chat I guess..?!!? Come on guys, get a spell checker. And a grammar checker.

[JeffD]

It's nice

[Anonymous]

I guess facebook can't make the application available to a percent of their users as a beta test? Phased roll out is the cornerstone of scalability.