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
660
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
LLMOpsのパフォーマンスを支える技術と現場で実践した改善
po3rin
8
980
The State of Fluid (2025)
s2b
0
200
一人でAIプロダクトを作るための工夫 〜技術選定・開発プロセス編〜 / I want AI to work harder
rkaga
13
2.8k
Claude Codeで実装以外の開発フロー、どこまで自動化できるか?失敗と成功
ndadayo
2
1.4k
Portapad紹介プレゼンテーション
gotoumakakeru
1
130
パスタの技術
yusukebe
1
400
モバイルアプリからWebへの横展開を加速した話_Claude_Code_実践術.pdf
kazuyasakamoto
0
270
Flutter로 Gemini와 MCP를 활용한 Agentic App 만들기 - 박제창 2025 I/O Extended Seoul
itsmedreamwalker
0
150
令和最新版手のひらコンピュータ
koba789
14
8k
A Gopher's Guide to Vibe Coding
danicat
0
170
Infer入門
riru
4
1.6k
オープンセミナー2025@広島「君はどこで動かすか?」アンケート結果
satoshi256kbyte
0
210
Featured
See All Featured
Rebuilding a faster, lazier Slack
samanthasiow
83
9.1k
Large-scale JavaScript Application Architecture
addyosmani
512
110k
We Have a Design System, Now What?
morganepeng
53
7.7k
Making Projects Easy
brettharned
117
6.3k
Intergalactic Javascript Robots from Outer Space
tanoku
272
27k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
9
780
GitHub's CSS Performance
jonrohan
1031
460k
Music & Morning Musume
bryan
46
6.7k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
The Invisible Side of Design
smashingmag
301
51k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3.1k
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!