Service Oriented Applications

Service OrientedApplicationsHow we built letitcast.com, Ruby Lugdunum, June 26, 2011Michael BensoussanDeveloper

Service OrientedApplications cc @elise_huardHow we built letitcast.com, Ruby Lugdunum, June 26, 2011Michael BensoussanDeveloper

Service OrientedApplicationsHow we built letitcast.com, Ruby Lugdunum, June 26, 2011 Monolithic applications are boooring ! cc @apotonickMichael BensoussanDeveloper

Tons of

It was a

MySQLFront-end

Redis MySQL API for FTP Rails API users and dir. (sinatra)ConfigsEngine video uploaded Client Library on FTP notifier (sinatra) Rails Rails Frontend 1 Frontend 2 Rails Frontend 3 Configs Auth Engine Engine

What did we

Scale With Code Complexity

Scale With Team Size

Monolithic applications don’tscale

Let’s build an API and multiple Front-ends

Choose a communication layerand a serialization format

We choose HTTP

We choose HTTP andJSON

Build theAPI !

Tip: don’t load therails libs you don’t need

require "rails/all"

# Pick the frameworks you want:require "active_record/railtie"require "action_controller/railtie"require "action_mailer/railtie"# require "active_resource/railtie"require "rails/test_unit/railtie"

[ ActionDispatch::Flash, ActionDispatch::Session::CookieStore, ActionDispatch::Cookies, ActionDispatch::Static].each do |klass| conﬁg.middleware.delete klassend

Tip: Build the APIresponse

fabrik42 / acts_as_api

class User < ActiveRecord::Base acts_as_api api_accessible(ApiAccessible.init(:user)) def name "#{user.ﬁrstname} #{user.lastname}" endend

:user: :default: - :id - :name :full: - :id - :name - :birthday - :created_at - :updated_at

def show user = User.ﬁnd(params[:id]) render_for_api :full, :json => userend

MySQLRails API

Build your ClientLibrary

citizencast / restparty

class Casting < LetitCastClient resource_for :castings, :except => [:delete], :association => [:parts, :productions], :member => { :add_production => :post, :remove_production => :delete }, :collection => {:search => :get}end Casting.ﬁnd(:all) # GET /castings.json casting = Casting.ﬁnd(42) # GET /castings/42.json parts = casting.parts # GET /castings/42/parts.json Casting.delete(1) # DEL /castings/1 Casting.search(:q => "Mike") # GET /castings/search?q=Mike

MySQL Rails APIClient Library Rails Frontend 1

MySQL Rails API Client Library Rails RailsFrontend 1 Frontend 2

Rails Engines !

Rails 3 Rails 3.1gem install enginex rails plugin new auth --fullenginex auth

MySQL Rails API Client Library Rails RailsFrontend 1 Frontend 2 Conﬁgs Auth Engine Engine

HTTP is slow !

Cache !

jodosha / redis-store

Redis Cache Invalidate HTTP calls CacheFrontends Rails API

def show @casting = Rails.cache.fetch("controller/castings/#{params[:id]}") do Casting.ﬁnd(params[:id]) endend

class CastingSweeper < ActionController::Caching::Sweeper observe Casting def after_save(casting) Rails.cache.delete_matched("controller/castings/index*") Rails.cache.delete_matched("controller/castings/#{casting.id}*") endend

Redis MySQL Rails API Client Library Rails RailsFrontend 1 Frontend 2 Conﬁgs Auth Engine Engine

Redis MySQL API for FTP Rails API users and dir. (sinatra)ConfigsEngine video uploaded Client Library on FTP notifier (sinatra) Rails Rails Frontend 1 Frontend 2 Rails Frontend 3 Configs Auth Engine Engine

Questions?

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Service Oriented Applications

by Michael Bensoussan on Jun 27, 2011

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