Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Client_Side_Rendering_Is_Not_So_Easy.pdf
Search
nuria_ruiz
July 08, 2012
Technology
3
840
Client_Side_Rendering_Is_Not_So_Easy.pdf
nuria_ruiz
July 08, 2012
Tweet
Share
More Decks by nuria_ruiz
See All by nuria_ruiz
Wikipedia's Lean Data Diet and Lessons Learned
nuria_ruiz
0
170
Wikipedia and The Lean Data Diet
nuria_ruiz
1
67
Other Decks in Technology
See All in Technology
B2C&B2B&社内向けサービスを抱える開発組織におけるサービス価値を最大化するイニシアチブ管理
belongadmin
1
6.2k
Understanding_Thread_Tuning_for_Inference_Servers_of_Deep_Models.pdf
lycorptech_jp
PRO
0
180
Lufthansa ®️ USA Contact Numbers: Complete 2025 Support Guide
lufthanahelpsupport
0
140
自律的なスケーリング手法FASTにおけるVPoEとしてのアカウンタビリティ / dev-productivity-con-2025
yoshikiiida
1
15k
Geminiとv0による高速プロトタイピング
shinya337
0
250
無意味な開発生産性の議論から抜け出すための予兆検知とお金とAI
i35_267
3
12k
fukabori.fm 出張版: 売上高617億円と高稼働率を陰で支えた社内ツール開発のあれこれ話 / 20250704 Yoshimasa Iwase & Tomoo Morikawa
shift_evolve
PRO
2
6.8k
整頓のジレンマとの戦い〜Tidy First?で振り返る事業とキャリアの歩み〜/Fighting the tidiness dilemma〜Business and Career Milestones Reflected on in Tidy First?〜
bitkey
2
14k
プライベートクラウドでの効率的な証明書配布戦略 / Efficient Certificate Distribution Strategy in Private Cloud
lycorptech_jp
PRO
0
110
Connect 100+を支える技術
kanyamaguc
0
190
20250705 Headlamp: 專注可擴展性的 Kubernetes 用戶界面
pichuang
0
240
FOSS4G 2025 KANSAI QGISで点群データをいろいろしてみた
kou_kita
0
390
Featured
See All Featured
Done Done
chrislema
184
16k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Optimizing for Happiness
mojombo
379
70k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
26k
Become a Pro
speakerdeck
PRO
28
5.4k
Being A Developer After 40
akosma
90
590k
The Cost Of JavaScript in 2023
addyosmani
51
8.5k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
130
19k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.4k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
161
15k
How to Think Like a Performance Engineer
csswizardry
24
1.7k
Build your cross-platform service in a week with App Engine
jlugia
231
18k
Transcript
from 2010 to now... Client Side Rendering is Not So
Easy
Nuria Ruiz @pantojacoder
What is client side rendering? A fine idea...
None
<div class="entry"> <h1>{{title}}</h1> <div class="body"> {{{value}}} </div> </div> { "title":
"Pretty title", "value": 10000, }
To move rendering to the client you need two things:
1. Template Engine 2. Templates Loads of Javascript in the client.
None
Couple of things about About 1 billion page requests every
day. 10% on IE7, 0.5% on IE6.
We have a loading bar.
We have a thick Javascript client.
We offer several languages: Spanish, English, Catalan...
Back to loads of Javascript in the client... Remember that
loading bar? 500 K compressed, 23 requests ~ 3300 K of Javascript !!!!
Performance Problem #1 Eager loading of Javascript. Async !=Lazy
<div class="footer"> <div> <a class="hide" href="%sectionLink%"> <fw:translate id="Video.video_view_more_link"> %(video_view_more_link)View more...
</fw:translate> </a> </div> Performance Problem #2 and #3 Templates were plain HTML documents.
We needed to do ajax to retrieve templates, which are
HTML docs (cannot use <script>). AND Loads of walking the DOM to insert data.
None
Faster on IE7 than Chrome. We tried a "new" templating
technology to solve the DOM issue.
XSLT
XSLT was faster but had many problems. Browser Implementation is
1.0. It does not support dynamic subtemplating. Adding translations was a major pain.
STEP BACK
With as much Javascript we had in the client nothing
is going to go fast. Fact #1 We need to load Javascript lazily.
None
How does the YUI lazy loading work?
None
<a href="#m=Albums&f=index" onclick="Bootloader('t-albums- showcase','Request.click','?m=Albums&f=index');return false;" title="My photo albums">…</a> Each link
does an HTTP request to retrieve the Javascript needed. YUI().use('t-albums')
None
We can remove the loading bar.
Fact #2 We need to start from scratch on the
template engine.
None
works using a Lexical Parser. Based on Jison, a Javascript
parser generator.
<div class="entry"> <h1>{{title}}</h1> <div class="body"> {{{body}}} </div> </div> Template: Compilation:
$ npm install handlebars $ /usr/bin/handlebars sample_template.js Builds a grammar based on HTML that compiles to Javascript.
(function() { var template = Handlebars. template['sample_template.js'] =function (Handlebars,depth0,helpers,partials,data) {
helpers = helpers || Handlebars.helpers; var self = this; buffer += "<div class=\"entry\">\n <h1>"; ..... } buffer += escapeExpression(stack1) + "</h1>\n <div class=\"body\">\n ” .... buffer += escapeExpression(stack1) + "\n </div>\n </div>\n"; return buffer; }); })()
DOM manipulation.
Why Handlebars? If/else constructors. Handlebars is actively worked on. Compilation
available.
How do we download templates? With YUI, just like anything
else, templates now are Javascript. <a href="#m=Albums&f=index" onclick="Bootloader('t-photo','Request.click', '?m=Albums&f=index); return false;" title="My photo albums">…</a>
YUI walks the dependency tree.
None
Translations client side. {{{translate "Photos" "%(photo_save_title) Save"}}} We hope to
open source our I18N for Handlebars.
Do we use Client Side Rendering for everything? No. 1.
Features that exist only client side, like overlays, autocomplete, spinners, chat UI. 2. Features for which there are significant CPU savings to be done, e.g. high traffic pages like photos.
What's next? Server Side.
Last Thoughts.
Do not think about problems in isolation.
Use the right tool for the job.
Measure Everything.
5 times faster
Questions?