In the Belly of the Whale: Operations at Twitter

Keynotes, Operations Ballroom ABCD
Average rating: ***..
(3.60, 60 ratings)

John will cover many aspects of Twitter’s scaling efforts, including:

  • Finding the weak points in Ruby on Rails, and repairing them.
  • In house Peer-to-Peer: High speed deploys across thousands of machines in no time at all
  • Managing thousands of machines: Why you need a central machine database, now.
  • User management: How do you onboard many new developers and still remain fault tolerant?
  • Caching methodologies and Twitter’s open source efforts (Scarling, CacheMoney, Libmemcached)
  • Asynchronous versus Synchronous processing during request lifetime
  • Life after Syslog: What do do when it won’t work anymore.
Photo of John Adams

John Adams


John Adams (Twitter Operations) has worked in computer security, operations, and systems engineering for over 16 years. Prior to Twitter, he has worked at Apple, Inktomi, c|net, and a major video-on-demand site, improving security, performance, and reliability at large scale.

Comments on this page are now closed.


Picture of Shanti Subramanyam
Shanti Subramanyam
06/24/2010 2:31pm PDT

Great presentation. I was blown away by the mention of “statistical analysis” and “modeling” – never heard that before in the web world!

Picture of Bjoern Kaiser
Bjoern Kaiser
06/24/2010 4:25am PDT

Now this is the kind of presentations I want to see… +++

Picture of John Masseria
John Masseria
06/24/2010 4:20am PDT

Great presentation, thank you John for sharing your insights into the challenges you face at Twitter.

Picture of Ernest Mueller
Ernest Mueller
06/24/2010 3:41am PDT

Hey, you mentioned moving from Proxy Balancer to ProxyPass but the slides said you moved ProxyPass to Proxy Balancer – I tend to believe PB -> PP more but can you clarify?

Picture of Ernest Mueller
Ernest Mueller
06/24/2010 2:20am PDT

That was like drinking from a fire hose – lots of great stuff!

For Velocity China sponsorship information for companies outside China, contact Yvonne Romaine at

  • Google
  • Strangeloop
  • Yahoo! Inc.
  • Dyn Inc.
  • Facebook
  • Schooner Information Technology
  • Tilera
  • AlertSite
  • AppDynamics
  • Aptimize
  • CDNetworks
  • Circonus
  • Cloudscaling
  • Clustrix
  • Coradiant
  • Dell
  • DTO Solutions
  • MaxiScale
  • Neustar
  • Nokia
  • NorthScale, Inc.
  • Shopzilla
  • Splunk
  • Virident
  • Zoompf
  • Neustar

For information on exhibition and sponsorship opportunities at the conference, contact Yvonne Romaine at

Download the Velocity Sponsor/Exhibitor Prospectus

Download the Media & Promotional Partner Brochure (PDF) for information on trade opportunities with O'Reilly conferences or contact mediapartners@

For media-related inquiries, contact Maureen Jennings at

To stay abreast of conference news and to receive email notification when registration opens, please sign up for the Velocity Conference bulletin (login required)

View a complete list of Velocity contacts