{"id":32361,"date":"2021-11-24T18:16:04","date_gmt":"2021-11-24T15:16:04","guid":{"rendered":"https:\/\/www.natro.com\/blog\/?p=32361"},"modified":"2021-11-24T18:16:59","modified_gmt":"2021-11-24T15:16:59","slug":"cdn-nedir-avantajlari-nelerdir-ve-ne-ise-yarar","status":"publish","type":"post","link":"https:\/\/www.natro.com\/blog\/cdn-nedir-avantajlari-nelerdir-ve-ne-ise-yarar\/","title":{"rendered":"CDN Nedir, Avantajlar\u0131 Nelerdir ve Ne \u0130\u015fe Yarar?"},"content":{"rendered":"\n

G\u00fcn\u00fcm\u00fcz d\u00fcnyas\u0131nda internet kullan\u0131c\u0131lar\u0131, web sitesinin h\u0131zl\u0131 olmas\u0131na ayr\u0131ca \u00f6nem verirler. Bu kapsamda web sitesi h\u0131z\u0131n\u0131 art\u0131rman\u0131n ve kaynak kullan\u0131m\u0131n\u0131 azaltman\u0131n yolu, ihtiyaca y\u00f6nelik bir i\u00e7erik da\u011f\u0131t\u0131m a\u011f\u0131n\u0131n kullan\u0131m\u0131d\u0131r. Amac\u0131n\u0131z do\u011frultusunda faydalanabilece\u011finiz kaynaklardan biri de CDN\u2019dir. CDN, resim, JavaScript, CSS, video gibi i\u00e7eriklerin ziyaret\u00e7ilere k\u0131sa s\u00fcrede ula\u015fmas\u0131n\u0131 sa\u011flayarak sunucu yan\u0131t s\u00fcresinin k\u0131salt\u0131lmas\u0131n\u0131 sa\u011flar.<\/p>\n\n\n\n

CDN, \u00f6zellikle \u00e7ok say\u0131da i\u00e7erik bar\u0131nd\u0131ran b\u00fcy\u00fck web siteleri i\u00e7in uygundur. Fakat k\u00fc\u00e7\u00fck \u00e7aptaki web sitelerinin performans\u0131 da bu sistem sayesinde art\u0131r\u0131labilir. \u00c7o\u011fu CDN sa\u011flay\u0131c\u0131s\u0131n\u0131 kullanmak i\u00e7in belli bir \u00fccret \u00f6demeniz gerekir. Fakat piyasadaki \u00fcr\u00fcnleri inceledi\u011finizde \u00fccretsiz CDN sa\u011flay\u0131c\u0131lar\u0131n varl\u0131\u011f\u0131n\u0131 da g\u00f6rebilirsiniz.<\/p>\n\n\n\n

CDN, \u0130ngilizce \u201cContent Delivery Network<\/strong>\u201d kelimelerinin k\u0131saltmas\u0131d\u0131r. T\u00fcrk\u00e7e kar\u015f\u0131l\u0131\u011f\u0131 ise \u201c\u0130\u00e7erik Da\u011f\u0131t\u0131m A\u011f\u0131\u201d \u015feklindedir. D\u00fcnya \u00fczerinde bulunan bir\u00e7ok global veri merkezinde bu da\u011f\u0131t\u0131m a\u011f\u0131 kullan\u0131l\u0131r. Temel anlamda CDN\u2019nin kullan\u0131m amac\u0131, ana sunucu haricinde varl\u0131k noktalar\u0131 (PoP) yaratmakt\u0131r. Bu sistem sayesinde kullan\u0131c\u0131 istekleri \u00e7ok daha h\u0131zl\u0131 \u015fekilde kar\u015f\u0131lanarak web sitesi trafi\u011finin kontrol edilmesi sa\u011flan\u0131r. Kullan\u0131c\u0131, ortaya koyulan sistem sayesinde tatmin edici bir deneyimle kar\u015f\u0131 kar\u015f\u0131ya kal\u0131r.<\/p>\n\n\n\n

Akl\u0131n\u0131za gelen hemen hemen t\u00fcm b\u00fcy\u00fck web sitelerinde bu i\u00e7erik da\u011f\u0131t\u0131m a\u011f\u0131 kullan\u0131l\u0131r. \u00d6rne\u011fin, Amazon\u2019u ziyaret etti\u011finizde ya da Facebook\u2019ta bir arkada\u015f\u0131n\u0131za mesaj g\u00f6nderdi\u011finizde bu sistemi kullanm\u0131\u015f olursunuz. Bu sistem, kullan\u0131c\u0131n\u0131n d\u00fcnyan\u0131n hangi noktas\u0131ndan web sitesine girdi\u011fine bakmaks\u0131z\u0131n uygun i\u00e7eri\u011fi kar\u015f\u0131s\u0131na \u00e7\u0131kar\u0131r. \u0130letim sistemi geni\u015f bir alana yay\u0131larak web sitesinin sayfa y\u00fckleme h\u0131z\u0131 k\u0131salt\u0131l\u0131r. Bu sayede kullan\u0131c\u0131n\u0131n web sitesinden beklentilerine de en iyi \u015fekilde kar\u015f\u0131l\u0131k verilmi\u015f olur.<\/p>\n\n\n\n

CDN Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/strong><\/span><\/h2>\n\n\n\n

Bir web sitesine ba\u011flanmak kullan\u0131c\u0131 i\u00e7in \u00e7ok kolay bir i\u015flemdir. Kullan\u0131c\u0131, bilgisayar\u0131n adres sat\u0131r\u0131na ba\u011flanmak istedi\u011fi web sitesinin URL\u2019sini yazar ve i\u015flemi onaylayarak bekler. Kullan\u0131c\u0131 i\u00e7in bu i\u015flem \u00e7ok kolay iken geri planda bir\u00e7ok i\u015flem ger\u00e7ekle\u015fir. Adres sat\u0131r\u0131na URL\u2019sinin yaz\u0131lmas\u0131 ile birlikte bilinmeyen bir b\u00f6lge arac\u0131l\u0131\u011f\u0131 ile iste\u011finize cevap verilir. Milyarlarca bilgi ve i\u00e7erik, ana sunucu taraf\u0131ndan bilgisayar ya da mobil cihazlara ula\u015ft\u0131r\u0131l\u0131r. \u0130nternet ortam\u0131nda bulunan \u00e7o\u011fu web sitesinde sade metinlerden multimedya i\u00e7eriklere kadar binlerce element bulunur.<\/p>\n\n\n\n

\u0130lk etapta kullan\u0131c\u0131n\u0131n akl\u0131na, i\u00e7eri\u011fe ne kadar yak\u0131nsa ba\u011flant\u0131 h\u0131z\u0131n\u0131n da o kadar h\u0131zl\u0131 olaca\u011f\u0131 de\u011ferlendirmesi gelebilir. Kullan\u0131c\u0131n\u0131n sunucudan talep etti\u011fi istek i\u00e7in hangi a\u011f yak\u0131nsa o sunucu taraf\u0131ndan cevap verilir. Veri \u00f6n belle\u011fe al\u0131n\u0131r. Ayn\u0131 bilgi i\u00e7in \u00e7ok fazla istek varsa, bu istekler sunucu a\u011f\u0131na yay\u0131larak trafik yo\u011funlu\u011fu azalt\u0131l\u0131r. Bu sayede web sitesindeki trafik y\u00fck\u00fc de dengelenmi\u015f olur. CDN sayesinde olu\u015fan sistem ile web sayfas\u0131n\u0131n yava\u015f y\u00fcklenmesi, taray\u0131c\u0131n\u0131n \u00e7\u00f6kmesi ya da hizmetin aksamas\u0131 gibi sorunlarla kar\u015f\u0131la\u015fman\u0131n da \u00f6n\u00fcne ge\u00e7ilmi\u015f olur.<\/p>\n\n\n\n

CDN kullan\u0131m\u0131n\u0131n en \u00f6nemli faydas\u0131, ziyaret\u00e7iye en yak\u0131n noktadan dosya g\u00f6nderiminin sa\u011flanmas\u0131d\u0131r. \u00d6zel adanm\u0131\u015f sunucu ya da sanal sunucu (VPS)<\/a><\/strong> gibi g\u00fc\u00e7l\u00fc bir bar\u0131nd\u0131rma alan\u0131 kullan\u0131yorsan\u0131z; CDN kullanarak sistem performans\u0131nda \u00e7ok fazla de\u011fi\u015fiklik olmayaca\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnebilirsiniz. Fakat kaynak ve i\u00e7erik say\u0131s\u0131 artt\u0131k\u00e7a sistemin performans\u0131n\u0131n d\u00fc\u015ft\u00fc\u011f\u00fcn\u00fc g\u00f6rebilirsiniz. CDN kullan\u0131m\u0131, web sitesi ziyaret\u00e7ileri i\u00e7in h\u0131z\u0131n art\u0131r\u0131lmas\u0131 i\u00e7in \u00e7ok \u00f6nemli bir arg\u00fcmand\u0131r.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u00d6rnek vermek gerekirse, web sitesi sunucunuzun Kanada\u2019da oldu\u011funu ve ziyaret\u00e7i ba\u011flant\u0131s\u0131n\u0131n da T\u00fcrkiye\u2019den yap\u0131ld\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnelim. D\u00fcnyan\u0131n iki farkl\u0131 ucu aras\u0131ndaki ba\u011flant\u0131, mesafe nedeniyle do\u011fal olarak uzun s\u00fcrecektir. CDN kullan\u0131larak sunucular d\u00fcnyan\u0131n farkl\u0131 noktalar\u0131na da\u011f\u0131t\u0131l\u0131r. Bu sayede iki nokta aras\u0131ndaki en yak\u0131n alandan veri transferi sa\u011flanacak ve ba\u011flant\u0131 h\u0131z\u0131 artacakt\u0131r.<\/p>\n\n\n\n

Hangi bar\u0131nd\u0131rma servisini kullan\u0131rsan\u0131z kullan\u0131n, CDN kullan\u0131m\u0131 <\/strong>ile web sitenizde belirgin bir h\u0131zlanma oldu\u011funu g\u00f6rebilirsiniz. S\u00f6z konusu sistem sayesinde bant geni\u015fli\u011fi ve disk alan\u0131 kullan\u0131m\u0131 azalacak ve performans y\u00fckselecektir. Mesafe ne kadar uzak olursa olsun sunucuda bulunan i\u00e7erikler k\u0131sa s\u00fcrede ziyaret\u00e7ilerin ekran\u0131na yans\u0131yacakt\u0131r.<\/p>\n\n\n\n

CDN\u2019in Avantajlar\u0131 Nelerdir?<\/strong><\/h2>\n\n\n\n

CDN i\u00e7erik da\u011f\u0131t\u0131m a\u011f\u0131<\/strong> kullanman\u0131n \u00e7ok \u00f6nemli avantajlar\u0131 vard\u0131r. K\u00fc\u00e7\u00fck bir co\u011frafi b\u00f6lgeye hizmet veren bir web sitesinin CDN kullanmas\u0131ndan \u00e7ok belirgin performans art\u0131\u015f\u0131 g\u00f6zlemlenmeyebilir. Fakat \u00e7ok daha b\u00fcy\u00fck kitlelere hizmet veren bir e-ticaret sitesine sahipseniz ya da d\u00fcnyan\u0131n \u00e7e\u015fitli noktalar\u0131ndan kullan\u0131c\u0131lar\u0131n web sitenize kolayca eri\u015fmesini istiyorsan\u0131z web sitesi performans\u0131 \u00f6n plana \u00e7\u0131kar.<\/p>\n\n\n\n

CDN, rakiplerinize kar\u015f\u0131 web sitenizin \u00e7ok daha \u00fcst\u00fcn olmas\u0131n\u0131 sa\u011flayaca\u011f\u0131 gibi arama motorlar\u0131n\u0131n \u00f6d\u00fcllendirece\u011fi t\u00fcrden bir UX elde etmenize de destek olur. CDN kullan\u0131m\u0131 ile 4 farkl\u0131 alanda avantaj sa\u011flanabilir. Bu kapsamda sahip olaca\u011f\u0131n\u0131z avantajlar\u0131 a\u015fa\u011f\u0131daki ba\u015fl\u0131klar\u0131m\u0131zda bulabilirsiniz.<\/p>\n\n\n\n

Web Sitesi Trafik Yo\u011funlu\u011funun Azalt\u0131lmas\u0131<\/strong><\/h3>\n\n\n\n

Bir k\u0131s\u0131m hosting hizmetlerindeki en b\u00fcy\u00fck sorun web sitesi trafi\u011fidir. Web sitenizin trafi\u011finin artmas\u0131, site performans\u0131n\u0131n d\u00fc\u015fmesine neden olur. Bu durumda trafi\u011fi kar\u015f\u0131layarak bant geni\u015fli\u011fini muhafaza eden bir sisteme ihtiya\u00e7 duyars\u0131n\u0131z. S\u00f6z konusu sorun, CDN kullan\u0131m\u0131 ile ortadan kald\u0131r\u0131labilir.\u00a0<\/p>\n\n\n\n

H\u0131z\u0131n Art\u0131r\u0131lmas\u0131<\/strong><\/h3>\n\n\n\n

Web sitelerinde kar\u015f\u0131la\u015f\u0131lan en \u00f6nemli sorunlardan biri de gecikme s\u00fcresidir. S\u00f6z konusu sorun, kullan\u0131c\u0131dan kayna\u011fa ya da kaynaktan kullan\u0131c\u0131ya olan bilginin ula\u015fma s\u00fcresinin artmas\u0131d\u0131r. Buna sebep olan durumlar\u0131 da \u015fu \u015fekilde s\u0131ralayabiliriz:<\/p>\n\n\n\n