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Created May 18, 2012 16:20
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Day one notes from RedDot Ruby Conf. All the speakers were great(not to mention their slides), so just a disclaimer that the number of notes != how good the speaker is
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reddot_ruby_conf_day_one_notes.md

#Red Dot Ruby Conf 2012

##Day 1 Summary of Reddot Ruby Conf 2012

###Google: Ilya Grigorik - Building a Faster Web

####Learned a lot of metrics from Google's Ilya Grigorik:

  • Average page size back in Nov 2010: 700KB

  • Average page size today: 1042KB (does that mean pretty much most of the web sites today are unusable for people with slow connections?)

  • 84 requests on average per page!

  • try not to use cookies as much as possible

  • page load battle!

    • Straits Times vs Guardian
    • Battlefield: Tokyo, using IE8
    • Straits:
      • @11-@25 seconds: nothing happens
      • @25 seconds: ads appear
      • @25.1 seconds: images appear
      • @25.9 seconds: ads replace image!

  • Blue Line in chrome's web inspector: DOMContentLoaded fires (when parsing is complete)

  • Red Line in chrome's web inspector: Page load (onload)

  • CSS on top(in ), JS at bottom(before end of )

  • async vs defer

    • regular: wait for network, execurte, proceed
    • defer: download in bg, execute in order after onload
    • async: download in bg, execute when ready

  • 60% of weight of page are images (on average)

    • average 53 images on a page

===========

Heroku: Richard Schneeman - The 12 Factor App

http://12factor.net

  • Config:

    • use .env file + foreman

    • Procfile (for awetest?)

      web: bundle exec unicorn -p
     $PORT -c ./config/unicorn.rb

worker: bundle exec rake jobs:work

  • Development vs Production

    • dev as close to prod as possible
    • use real/consistent data
    • heroku db:pull
    • rake tasks per feature, and one master rake feature to create production type data for app
      • for moving to a different machine and setting up the db
    • always specify versions for bundler

  • Not in 12 Factor but recommended: README.md

    • brew install memcache (instructions for external dependencies)

  • Staging Environment

    • should also have prod data

  • 1 app 1 codebase

    • Branches (keep codebase clean)
    • Git Flow!

  • Logging

    • heroku logs -- remote production -- tail
    • error pages, if user is admin, ACTUALLY SHOW ERROR BACKTRACE (for awetest)

  • Scale Out

    • Workers
      • Rails 4: Active queue
      • Resque, delayedjob, sidekiq

===========

Engine Yard: Thorben Schroder - PUBSUB Infrastructure

  • implicit distriution of information
    • share everything

===========

Github: Danish Khan - The ruby community

  • http://rubydramas.com
  • solutions:
    • respect each other
    • always have readme files
      • good documentation
      • have some examples
      • use github pages/jekyll
    • github issue labels for novice, intermediate, advanced
    • send pull requests

===========

HP Labs: Sau Sheong Chang - Ruby, Rock & Roll

===========

New Context: Winston Teo - CSS Testing

  • modular approach to building css
    • reuse of css styles
    • put all css styles in one page
      • like bootstrap
    • cactus - gem to test css w/ js
      • assert css styles
        • Cactus.expect ("header", "width").toEqual("800px")
        • has rspec and capybara capabilities

===========

Codemancers: Hemant Kumar - Ruby 1.9

  • Language changes:
    • current dir is no longer in load path (require_relative)
    • instance_exec = instance_eval with args
    • arity checking on lambda
    • blocks can accept block args
    • new lambda, hash syntax
  • GC & Obj allocation changes
  • has native VM threads

===========

Unit IO: Tim Oxley - Client side Rendering

  • client templates
  • infra
  • dynamic pages can be expensive
  • Why need a template engine
    • smaller stack
    • try ember rails
    • campjs.com

===========

@benjaminoakes
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Hi there,

Thanks for sharing these! Would you be interested in contributing them to our conferences wiki?

https://github.com/newhavenrb/conferences/wiki

I might have done it myself, but I wanted to make sure you'd be okay with the reuse.

Ben

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