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Come funziona Stack Overflow
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Marco Cecconi
February 26, 2014
Programming
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Come funziona Stack Overflow
Slide dell'intervento a Community Days 2013
Marco Cecconi
February 26, 2014
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Transcript
#CDays14 – Milano 25, 26 e 27 Febbraio 2014 COME
FUNZIONA STACK OVERFLOW Marco Cecconi @sklivvz http://stackoverflow.com/
Come Funziona Marco Cecconi @sklivvz sklivvz@stackoverflow.com
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54° network per traffico a livello globale* …and 15° in
Italia, grazie! *source: Quantcast, Alexa
544,408,192 pagine servite negli ultimi 30 giorni* (~200,000,000 in piú
rispetto a Febbraio 2013) *source: Quantcast
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web servers load balancers redis search database http(s) http rest
http protobuf sql sql protobuf tag engine
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Stiamo ancora scalando “in su”…
YAGNI* Funziona. * You Ain’t Gonna Need It!
Pochi progetti :-)
Pochi progetti :-) Poche linee di codice :-)
Pochi progetti :-) Poche linee di codice :-) Eeek! Pochissimi
test :-S
Few projects :-) Few lines of code :-) Fantastica comunità
che ci aiuta :-D Eeek! very few tests :-S
BATCAVERNA
DEV.SO BATCAVERNA
META.SO DEV.SO BATCAVERNA
META.SO DEV.SO BATCAVERNA
META.SO NETWORK DEV.SO BATCAVERNA
Via veloce e spacca tutto
Via veloce e spacca tutto* * Non la home page
o le domande :-)
* Non la home page o le domande :-) Via
veloce e spacca tutto*
Cache a livello di rete (Browser, CDN, ecc.) Cache in
memoria server (HttpRuntime.Cache) Cache in memoria distribuita (Redis) Cache in memora SQL Server (384 giga di RAM!) Dischi a stato solido
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* Fonte http://it.wikipedia.org/wiki/Reinventare_la_ruota
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Reinventiamo ruote migliori! Liberiamo il sorgente delle ruote!
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<3 I NERD
PROGRAMMIAMO SUL NUDO METALLO \m/
ASSUMIAMO IL MIGLIOR TALENTO, OVUNQUE
BAT CAVERNA
Ir=kag=omz=pqoapq=ftue,=ymknq=iq=omz=fmxw=vane1Zewxuhhl&efmowahqdrxai.oay $_='@mk=uf=radimdp1Z--&ewxuhhl';tr/=1m-za-l@&Z/ !a-zP@\n/&print; Marco Cecconi @sklivvz sklivvz@stackoverflow.com Domande?
#CDays14 – Milano 25, 26 e 27 Febbraio 2014 Grazie
a Sponsor
#CDays14 – Milano 25, 26 e 27 Febbraio 2014 Q&A
Tutto il materiale di questa sessione su http://www.communitydays.it/ Lascia il feedback su questa sessione, potrai essere estratto per i nostri premi! Seguici su Twitter @CommunityDaysIT Facebook http://facebook.com/cdaysit #CDays14