Feeds

Facebook blames outage on internal config flaw

Cascading failure feedback loop calamity

Beginner's guide to SSL certificates

Facebook has published a detailed explanation of an internal configuration flaw that left the site unavailable for around two and a half hours overnight - the social network's worst downtime in four years.

The outage stemmed from a cascading series of problems involving an error correction system that feed into a feedback loop that only cutting traffic to a database cluster and rebooting the site could solve.

The social network apologised for the downtime, which affected servers worldwide, and promised to redesign the faulty system it used to correct configuration values to prevent future problems in the area. In the meantime, this system has been taken out of commission.

Facebook's statement can be found here. Arbor Network's chart of traffic flowing to Facebook can be found here.

Thursday night's outage follows similar but less severe problems the day before. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Doctor Who's Flatline: Cool monsters, yes, but utterly limp subplots
We know what the Doctor does, stop going on about it already
Facebook, Apple: LADIES! Why not FREEZE your EGGS? It's on the company!
No biological clockwatching when you work in Silicon Valley
'Cowardly, venomous trolls' threatened with TWO-YEAR sentences for menacing posts
UK government: 'Taking a stand against a baying cyber-mob'
Happiness economics is bollocks. Oh, UK.gov just adopted it? Er ...
Opportunity doesn't knock; it costs us instead
Arab States make play for greater government control of the internet
Nerds told to get lost in last-minute power grab bid at UN meeting
Zippy one-liners, broken promises: Doctor Who on the Orient Express
Series finally hits stride, but Clara's U-turn is baffling
Don't bother telling people if you lose their data, say Euro bods
You read that right – with the proviso that it's encrypted
Apple SILENCES Bose, YANKS headphones from stores
The, er, Beats go on after noise-cancelling spat
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
Win a year’s supply of chocolate
There is no techie angle to this competition so we're not going to pretend there is, but everyone loves chocolate so who cares.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.