Day one

Adam Keys – Rails’ Next Top Model: Using ActiveModel and ActiveRelation

• Rails 3 – ActiveSupport::Concern
• Accessors + Concern cleans up code
• New encryption classes for secure keys and encrypted data transfer
• ActiveModel::Validator for non AR validations
• validates_with MyValidator
• ActiveModel::Serialization for hydra?
• serialization: require ‘attributes’ and ‘attributes=’
• serializable_hash => to_json, to_xml, from_json, from_xml
• ActiveRelation (AREL)

Jesse Crouch – Building fast, lightweight data-driven apps using the Infochimps API

Infochimps API to create linkedin’ 2nd degree network with twitter data. Check it out at http://trst.me

Aman Gupta – Debugging Ruby: Understanding and Troubleshooting the VM and your Application

Slides: http://dl.dropbox.com/u/635/debugging_ruby-lsrc.pdf

• lsof -nPp : get open files for a specific pid
• strace: observe functions being called. Can see reads and writes between processes, like rails hitting mysql
• compile ruby w/ –enable-pthreads (not by default in debian or in rvm)
• See http://rvm.beginrescueend.com/rubies/installing/ end of page for how to do this via RVM
• tcpdump for networking
• google perftools for ruby profiling
• pprof ruby => graphical output
• home_run for C based time parsing
• perftools.rb for ruby diagrams of usage time
• gdb.rb to executive ruby from gdb, when running ruby via gdb
• bleak house: ruby memory leak detector
• rack-perftools: rack middleware for perftools.rb
• google perftools for forking

Caleb Clausen – What every Ruby programmer should know about threads

• Thread safe objects: mutex, queue, sizequeue, condition variable
• Semaphores to signal between threads
• Mutex to lock and unlock resources

Jesse Wolgamott – Battle of NoSQL stars: Amazon’s SDB vs Mongoid vs CouchDB vs RavenDB

• CouchDB is ACID, has great replication
• Mongo has great rails support

Day two

James Edward Gray II – Ruby in the Wild

• Logarithmic graphs!
• Rubyists like to do a lot of stuff from scratch
• “I’ve always been a fan of sqlite” – wha?
• For fun, scatch an itch, try something new
• “I try to make it a fun place [to work]“
• Greg Brown wearing a Boh hat for his interview
• Core of rake written in 30 mins
• Rake file list in place of Dir.glob for hydra? (FileList ?)
• File matching to compare input (source) and output (binary). Maybe for Sauron?

Chat with Scott Bellware

I had a great chat with Scott Bellware about Agile, Lean, and his own style of OO integration testing. He recommended this book:

The Principles of Product Development Flow: Second Generation Lean Product Development

Also, he sent me a link to how he does his OO testing scenarios:

http://github.com/sbellware/preview-signup

I flew back after lunch on day two, so I’ll have to catch the rest in the videos!

The presentation slides and code will be posted at http://www.smartlogicsolutions.com/wiki/Intro_to_Flex after the presentation.

RSVP at http://www.localist.com/event/6229 if you can make it.

Curtis Layton and Roland Lopez will be speaking about LiveCycle ES.

• BlazeDS
• PHP using AMFPHP
• Ruby on Rails using RubyAMF
• ColdFusion

I’ve added a Presentations section to our website where we will archive all presentations we give including any PowerPoint slides and source code.

I will try to post my code examples to the AMF Presentation page by tomorrow evening.