MWRC

Giles Bowkett - making some music with ruby Archaeopteryx

- Giles Bowkett: Archaeopteryx: A Ruby MIDI Generator

- learn probability matrix

- google is easy if you understand prob matrix

- google spell check in 21 lines of python

- wonder how easy OCR would seem in this context?

- don't understand python community.... why are there not more dick jokes about pythons?

- how is there not a web framework called trouser snake?

- oh yeah... better talk about lambdas

James Golick - Cooking with Chef - @jamesgolick github.com/jamesgolick

- Chef: Quick and Tasty Ruby Powered Server Configuration

- sysadmin work is boring

- too many config languages

- amazed if anyone can get nagios working on a consistent basis

- ues recipes to install packages

- recipes written in ruby

- create services -> status, restart, reload, etc.

- templates to create config files

- erb

- notifies restart if config changes

- autoreload on save very handy for things like dynamic lists of ips that change when you start a new EC2 instance

- makes setting up stuff like haproxy and heartbeat easier

- security

- easy to include iptables

- always turn off password ssh logins - easier to remember when part of your cookbook

- look into chef server and chef client

Joe Damato - RVM

- RVM: Ruby Version Manager - RVM Ruby Version Manager - Documentation

- RVM gemset - different gemsets for the same ruby version per project

- create rvmrc to switch env automatically when you cd into a project directory

- export gemsets?

- should you use gemsets or just bundler

Loren Segal - Documentation with YARD

- YARD 0.5.3 - The Longest

- Yet Another Ruby Documentor

- Talk about documentation in general

- Documentation to help you think about your API

- What makes documentation good?

- consistency -> pick a style and stick with it

- correct -> it can be wrong and should be audited

- coherent

- YARD

- meta-data

- @param [Symbol] req_type :get or :post

- ....

- yard-respec

- shows rspec specs alongside method docs

- yard-sinatra

- shows your routes for api

Michael Jackson - Rack for web developers

- Rack: a Ruby Webserver Interface

- Read the Spec

- blah, blah, blah

- rack is cool in that it allows web frameworks to communicate with web servers, but not sure you care that much unless making a web framework

Yehuda Katz - Modularity - Lessons learned from Rails 3

- Try to become modular too soon and you will be wrong

- Become modular once lack of modularity is hurting you, then decouple

- Constants -> Globals

- router.url_for in rails 3

- easier to track down where instance variables came from than Globals

- eliminate things that are global

- tests are the canary in the coal mine

- instead of hard coding contants, pass things around

- be subspicious of Contant.foo

- stop caring about object allocations

- object allocations are essentially free

- Render

- Controller -> ViewPathSet -> ViewPath -> Template (on file system)

- Used to assume actual file path

- hard to cache

- Template.new takes a path

- Now

- Caller -> LookupContext -> ViewPaths -> PathResolver-> Resolver -> Template

- Template.new takes a source

- Could overide PathResolver to pull from database or S3 or something

- could be useful in making a CMS system with Rails

- Use Modules

- don't put methods you want people to be able to override in a class, make a module

- then you cna call super

- Use ActiveSupport::Concern

Paul Sadauskas - HTTP

- read the spec :-)

- prevent the requests that you don't have to answer

- Persistent Connections - so you don't have to create a new TCP connection for every request --- keepalive=onC

- Caching

- how do you decide when something is stale?

Jeff Casimir - Ruby Processing

- dynamically generate images in ruby app

- uses jruby

- first built to create verticle column headers

- Distributed Programming with Ruby -> to learn how to send jobs to ruby processing from rails

- Beanstalkd -> simple fast background processing -> brew install beanstalkd