Page Caching Resurrected: A Fairy Tale

Page Caching Resurrected: Ben Sco eld – Viget Labs Sunday, March 22, 2009

Page Caching Resurrected: A Fairy Tale Ben Sco eld – Viget Labs Sunday, March 22, 2009

I’m a Rails guy Sunday, March 22, 2009

and this is a Rails talk Sunday, March 22, 2009

but this isn’t just for Rails Sunday, March 22, 2009

the story Sunday, March 22, 2009

Sunday, March 22, 2009

page caching Sunday, March 22, 2009

class PigsController caches_page :show def show @pig = Pig.ﬁnd(params[:id]) end def update @pig = Pig.ﬁnd(params[:id]) @pig.update_attributes(params[:pig]) expire_page :action => :show end end Sunday, March 22, 2009

Standard 1 Page 3000 requests per second Sunday, March 22, 2009

public dynamic content Sunday, March 22, 2009

action caching Sunday, March 22, 2009

class PigsController require_login :show caches_action :show def show @pig = Pig.ﬁnd(params[:id]) end def update @pig = Pig.ﬁnd(params[:id]) @pig.update_attributes(params[:pig]) expire_action :action => :show end end Sunday, March 22, 2009

Standard 1 Action 500 Page 3000 requests per second Sunday, March 22, 2009

dynamic content Sunday, March 22, 2009

fragment caching Sunday, March 22, 2009

<% cache(:key => 'index:piglist') do %> <ul id=quot;pig-listquot;> <% @pigs.each do |pig| %> <li> <%= image_tag pig.house.photo %> <%= h pig.name %> </li> <% end %> </ul> <% end %> Sunday, March 22, 2009

class PigsController # ... def update @pig = Pig.ﬁnd(params[:id]) @pig.update_attributes(params[:pig]) expire_fragment :key => 'index:piglist' end end Sunday, March 22, 2009

Standard 1 Fragment 20 Action 500 Page 3000 requests per second Sunday, March 22, 2009

eﬃciency Sunday, March 22, 2009

the idea Sunday, March 22, 2009

Rails 2.3 Sunday, March 22, 2009

hello, metal Sunday, March 22, 2009

class BigBadWolf def self.call(env) if env[quot;PATH_INFOquot;] =~ /^/threaten/ [ 200, {quot;Content-Typequot; => quot;text/htmlquot;}, quot;Little pig, little pig, let me in!quot; ] else [ 404, {quot;Content-Typequot; => quot;text/htmlquot;}, quot;Not Foundquot; ] end end end Sunday, March 22, 2009

high-performance endpoints Sunday, March 22, 2009

AJAX Sunday, March 22, 2009

so... Sunday, March 22, 2009

javascript Sunday, March 22, 2009

<ul id=quot;logged-in-navquot; class=quot;usernavquot; style=quot;display:nonequot;> <li id=quot;welcome-usernamequot; class=quot;firstquot;> Welcome </li> <li> <a href=quot;/profilequot; class=quot;utility-linkquot;>Profile</a> </li> <li> <a href=quot;/profile/queuequot; class=quot;utility-linkquot; id=quot;your-queue-linkquot;>Queue</a> </li> <li class=quot;sign-out-linkquot;> <a href=quot;#quot; id=quot;top-nav-sign-outquot; onclick=quot;new Ajax.Request(...)quot;>Sign Out</a> </li> </ul> <ul id=quot;logged-out-navquot; class=quot;usernavquot; style=quot;display:nonequot;> <li class=quot;first sign-out-linkquot;> <a class=quot;utility-linkquot; href=quot;#quot; id=quot;login-linkquot; onclick=quot;Login.show($('top-login-form')); return false;quot;>Login</a> </li> <li class=quot;signin-border-leftquot;> <a href=quot;/users/forgot_passwordquot; class=quot;utility-linkquot;>Forgot Password?</a> </li> <li class=quot;signin-border-leftquot;> <a href=quot;/signupquot; class=quot;utility-linkquot;>Sign Up</a> </li> </ul> Sunday, March 22, 2009

<ul id=quot;logged-in-navquot; class=quot;usernavquot; style=quot;display:nonequot;> <li id=quot;welcome-usernamequot; class=quot;firstquot;> Welcome </li> <li> <a href=quot;/profilequot; class=quot;utility-linkquot;>Profile</a> </li> <li> <a href=quot;/profile/queuequot; class=quot;utility-linkquot; id=quot;your-queue-linkquot;>Queue</a> </li> <li class=quot;sign-out-linkquot;> <a href=quot;#quot; id=quot;top-nav-sign-outquot; onclick=quot;new Ajax.Request(...)quot;>Sign Out</a> </li> </ul> <ul id=quot;logged-out-navquot; class=quot;usernavquot; style=quot;display:nonequot;> <li class=quot;first sign-out-linkquot;> <a class=quot;utility-linkquot; href=quot;#quot; id=quot;login-linkquot; onclick=quot;Login.show($('top-login-form')); return false;quot;>Login</a> </li> <li class=quot;signin-border-leftquot;> <a href=quot;/users/forgot_passwordquot; class=quot;utility-linkquot;>Forgot Password?</a> </li> <li class=quot;signin-border-leftquot;> <a href=quot;/signupquot; class=quot;utility-linkquot;>Sign Up</a> </li> </ul> Sunday, March 22, 2009

hulu is insane don’t do it like they do Sunday, March 22, 2009

the* right way *a Sunday, March 22, 2009

the standard approach Sunday, March 22, 2009

class ItemsController < ApplicationController def index @user = User.ﬁnd_by_login(params[:user]) @items = Item.released_on(params[:date]) end end Sunday, March 22, 2009

class Item < ActiveRecord::Base has_many :pulls, :dependent => :destroy named_scope :released_on, lambda { |date| date ||= Item.maximum(:released_on) {:conditions => {:released_on => date}, :order => 'name ASC'} } def pulled_by?(user) x = user.nil? ? false : !self.pulls.by_user(user.id).empty? end end Sunday, March 22, 2009

<h1>Releases</h1> <ul> <% @items.each do |item| %> <% content_tag_for :li, item do %> <%= image_tag 'cover.png', :alt => h(item.name), :class => 'cover' %> <%= image_tag('badge.png', :alt => 'pulling',:class => 'badge') if item.pulled_by?(@user) %> <p><%= h item.name %></p> <% end %> <% end %> </ul> Sunday, March 22, 2009

the hybrid approach Sunday, March 22, 2009

class ItemsController < ApplicationController caches_page :index def index @items = Item.released_on(params[:date]).all end end Sunday, March 22, 2009

require(File.dirname(__FILE__) + quot;/../../conﬁg/environmentquot;) unless deﬁned?(Rails) class PullList def self.call(env) if env[quot;PATH_INFOquot;] =~ /^/pulls/ date = '2008-11-05' user = '1' [ 200, {quot;Content-Typequot; => quot;application/javascriptquot;}, [Pull.by_user(user).for_date(date).map {|i| i.item_id}.to_json]] else [404, {quot;Content-Typequot; => quot;text/htmlquot;}, [quot;Not Foundquot;]] end end end Sunday, March 22, 2009

class Pull < ActiveRecord::Base belongs_to :user belongs_to :item named_scope :by_user, lambda { |user_id| {:conditions => {:user_id => user_id}} } named_scope :for_date, lambda { |date| {:include => :item, :conditions => {:items => {:released_on => date}}} } end Sunday, March 22, 2009

$(document).ready(function() { $.getJSON('/pulls', function(data) { $.each(data, function() { $('#item_'+this).addClass('pulled'); }); }); }); Sunday, March 22, 2009

the payoﬀ Sunday, March 22, 2009

standard Sunday, March 22, 2009

hybrid Sunday, March 22, 2009

Standard 0.617 Hybrid 0.039 0.096 content load time Sunday, March 22, 2009

when to use it Sunday, March 22, 2009

no shirt, no javascript, no service Sunday, March 22, 2009

Thank You ben sco eld - @bsco eld - http://www.viget.com/extend - http://www.speakerrate.com/speakers/44 Sunday, March 22, 2009

Page Caching Resurrected: A Fairy Tale

by Ben Scofield on Mar 22, 2009

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Page Caching Resurrected: A Fairy Tale — Presentation Transcript