Facebook Engineering on today's outage

Chris Woodfield rekoil at semihuman.com
Fri Sep 24 15:43:23 CDT 2010


Agreed; my reading of this suggests database caching issues (i.e. all the frontend/middleware clients hitting the main sql cluster at once instead of the memcached farm they normally use), not HTTP/CDN caching issues.

-C

On Sep 23, 2010, at 7:17 12PM, Jay R. Ashworth wrote:

> http://www.facebook.com/notes/facebook-engineering/more-details-on-todays-outage/431441338919
> 
> Apparently, our surmise about Akamai notwithstanding, the problem was actually
> internal to their app-specific caching facilities, which went into Sorcerer's
> Apprentice mode, and they had to kill them all and let ghod sort them out.
> 
> More if I get it; hope that posting's public. 
> 
> Cheers,
> -- jra
> 
> -- 
> Jay R. Ashworth                   Baylink                      jra at baylink.com
> Designer                     The Things I Think                       RFC 2100
> Ashworth & Associates     http://baylink.pitas.com                     '87 e24
> St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274
> 
>    Start a man a fire, and he'll be warm all night.
>     Set a man on fire, and he'll be warm for the rest of his life.
> 





More information about the NANOG mailing list