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
The Architecture of Stack Overflow - Merge Lisb...
Search
Marco Cecconi
September 26, 2014
Programming
4
410
The Architecture of Stack Overflow - Merge Lisbon 2014
The Architecture of Stack Overflow slides from Merge Lisbon 2014
Marco Cecconi
September 26, 2014
Tweet
Share
More Decks by Marco Cecconi
See All by Marco Cecconi
Stack Overflow - It's all about performance - Codemotion Rome 2015
sklivvz
0
880
L'architettura di Stack Overflow, {codemotion} Milano 2014
sklivvz
0
660
Stack Overflow - it's all about performance
sklivvz
2
710
Guerrilla Programming - code.talks 2014
sklivvz
0
650
The Architecture of Stack Overflow - Info Share 2014
sklivvz
3
650
The Architecture of Stack Overflow - Dev Sum 2014
sklivvz
2
630
The Architecture of Stack Overflow - QCon Japan 2014
sklivvz
2
240
The Architecture of StackOverflow - QCon China 2014
sklivvz
1
250
The Localization of Stack Overflow- QCon China 2014
sklivvz
1
400
Other Decks in Programming
See All in Programming
抽象化という思考のツール - 理解と活用 - / Abstraction-as-a-Tool-for-Thinking
shin1x1
1
930
AIコーディングエージェント全社導入とセキュリティ対策
hikaruegashira
15
9.3k
プロダクトという一杯を作る - プロダクトチームが味の責任を持つまでの煮込み奮闘記
hiliteeternal
0
370
Claude Code派?Gemini CLI派? みんなで比較LT会!_20250716
junholee
1
800
Go製CLIツールをnpmで配布するには
syumai
2
1.1k
はじめてのWeb API体験 ー 飲食店検索アプリを作ろうー
akinko_0915
0
180
kiroでゲームを作ってみた
iriikeita
0
140
QA x AIエコシステム段階構築作戦
osu
0
240
リッチエディターを安全に開発・運用するために
unachang113
1
350
商品比較サービス「マイベスト」における パーソナライズレコメンドの第一歩
ucchiii43
0
270
Vibe coding コードレビュー
kinopeee
0
400
PHPカンファレンス関西2025 基調講演
sugimotokei
6
1.1k
Featured
See All Featured
Fantastic passwords and where to find them - at NoRuKo
philnash
51
3.4k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
8
750
Site-Speed That Sticks
csswizardry
10
750
How STYLIGHT went responsive
nonsquared
100
5.7k
The Straight Up "How To Draw Better" Workshop
denniskardys
235
140k
Building Adaptive Systems
keathley
43
2.7k
Building a Modern Day E-commerce SEO Strategy
aleyda
43
7.4k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
Speed Design
sergeychernyshev
32
1.1k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.4k
Writing Fast Ruby
sferik
628
62k
Transcript
The Architecture Of Marco Cecconi @sklivvz http://sklivvz.com
Sizing up the problem
None
None
None
*source: Quantcast, Alexa #50-‐ish network for traffic* (between imdb.com
and t.co)
#50-‐ish network for traffic* …and #17 in Portugal!?
*source: Quantcast, Alexa much successful very traffic obrigado, yo!
543,255,552 pageviews in the last 30 days* *source: Quantcast
Our datacenter?
None
web servers load balancers redis search database http(s) http rest
http protobuf sql sql protobuf tag engine
None
We are sNll scaling up!
Our development cycle
BAT!CAVE Code-build-test cycle running on home machine feature requests
BAT!CAVE DEV.SO Test on the real servers git push
BAT!CAVE DEV.SO META.SE 1-click deploy Users test on meta.stackexchange.com (“baking”)
git push
BAT!CAVE DEV.SO META.SE 1-click deploy HALP! git revert git push
BAT!CAVE DEV.SO NETWORK META.SE 1-click deploy git push 1-click deploy
It’s live! Tons of users use it…
BAT!CAVE DEV.SO NETWORK META.SE 1-click deploy git push 1-click deploy
…and provide new feature requests
Move fast and break things* * Not the home
page or question page :-)
Move fast and break things* * Not the home
page or question page :-)
Abusing caching
Network Level Caches (CDN, etc.) Server Level Cache (HttpRuntime.Cache) Site
Level Cache (Redis) SQL Server Database Cache (384 gigs of RAM!) Solid State Disk
None
None
None
RisoQo & SpagheS
None
None
None
None
None
Throwing away risotto… one grain at a time!
Abuse caching for GC performance
IRepository<Order> orderRepository = container.Resolve<IRepository<Order>>();
Order order = orderRepository.Get(35); This is what you think you are doing…
…but if you think about it a bit more…
...this is what you are actually doing! IRepository<Order> repository =
new ValidatingOrderRepository ( new SecurityRepository<Order> ( new LoggingRepository<Order> ( new CachingRepository<Order> ( new NHibernateRepository<Order> () ) ) ) ); Order order = repository.Get(35);
Throwing away spaghetti… one strand at a time!
Dependency InjecNon is our version of spagheS code
Our source code
Few projects :-)
Few projects :-) Few lines of code :-)
Few projects :-) Few lines of code :-) Eeek! very
few tests :-S
Few projects :-) Few lines of code :-) Awesome community
to help :-D Eeek! very few tests :-S
YAGNI* * You Ain’t Gonna Need It!
Libraries and open source
None
None
None
Wrap code in libraries and open source it
None
None
None
“SUPERHERO” CODING
HIRE “NINJA” CODERS
TOOLS LEVEL: “NINJA”
• Performance is a feature • Always.
Be. Shipping. • Use your circumstances. • Open source your libraries • 3 obscenely big monitors. KEY TAKEAWAYS
None
Marco Cecconi @sklivvz http://sklivvz.com we are hiring new ninjas from
anywhere in the world!