Sam Pierson's Blog

Yehuda Katz talked about Rails 3
Rails API should not change! It’s a mistake to change the API and the implementation at the same time (think Ruby 1.9 language and VM).
ORM Agnisticism
With for_for @obj, @obj can be an ActiveRecord, DataMapper, CouchDB, SimpleDB, Sequel object.  Two interfaces are now support for ORM objects, ActiveRecord/DataMapper style: errors, #each, [...]

Ikai Lan, JRuby
Rails 2.2 is thread safe.  Threads are safe to use on the JVM.  Use threads and use their performance advantage.
Warble (from Sun – Charles Nutter et al) will package a complete Rails app for deployment on a Java App Server.
Lacks the ease of Passenger.
Lots of weird incompatibilities.  Timeout.  RubyIO.  Namespace issues.  Metaprogramming.  You [...]

Jerry Luk, LinkedIn

Bumper Sticker RoR app: 17M users, 900M views/month
NewIN – show new linkedin uses on google maps / ?globe9?
LinkedIn mobile
LinkedIn iPhone App (not rails)
OpenSocial Sandbox (hackday project)
LinkedIn Polls using JRuby
Use Starling, Beanstalk looking at JMS

Emmet @ JustIn.tv

Website for live video on the Internet (Youtube but live!)
Wrote a caching reverse proxy in Python & Twisted.
Use Twisted [...]