May 2022
Beginner to intermediate
756 pages
21h 30m
Korean
book
HTTP 완벽 가이드
by David Gourlry, Brian Totty, Lee Eung Jun, Sang -Il Jeong, Anshu Agarwal, Seilu Reddy, Marjorie Sayre
Content preview from HTTP 완벽 가이드
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185
7
장 캐시
The Definitive Guide
7
장
HTTP: The Definitive Guide
캐시
웹 캐시는 자주 쓰이는 문서의 사본을 자동으로 보관하는 HTTP 장치다. 웹 요청이
캐시에 도착했을 때, 캐시된 로컬 사본이 존재한다면, 그 문서는 원 서버가 아니라
그 캐시로부터 제공된다. 캐시는 다음과 같은 혜택을 준다.
· 캐시는 불필요한 데이터 전송을 줄여서, 네트워크 요금으로 인한 비용을 줄여
준다.
· 캐시는 네트워크 병목을 줄여준다. 대역폭을 늘리지 않고도 페이지를 빨리 불러
올 수 있게 된다.
· 캐시는 원 서버에 대한 요청을 줄여준다. 서버는 부하를 줄일 수 있으며 더 빨리
응답할 수 있게 된다.
· 페이지를 먼 곳에서 불러올수록 시간이 많이 걸리는데, 캐시는 거리로 인한 지연
을 줄여준다.
이 장에서 우리는 어떻게 캐시가 성능을 개선하고 비용을 줄이는지, 어떻게 그 효
과를 측정하는지, 그리고 효과를 극대화하기 위해 캐시를 어디에 위치시켜야 하는
지 설명한다. 우리는 또한 어떻게 HTTP가 캐시된 사본을 신선하게 유지하는지, 그
리고 어떻게 캐시가 다른 캐시나 서버와 상호작용하는지도 설명할 것이다.
7.1
불필요한 데이터 전송
복수의 클라이언트가 자주 쓰이는 원 서버 페이지에 접근할 때, 서버는 같은 문서를
HTTP(07장).indd 185 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.