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class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ko.wikipedia.org&uselang=ko" class=""><span>기부</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=%ED%8A%B9%EC%88%98:%EA%B3%84%EC%A0%95%EB%A7%8C%EB%93%A4%EA%B8%B0&returnto=%EC%BA%90%EC%8B%9C" title="계정을 만들고 로그인하는 것이 좋습니다. 하지만 필수는 아닙니다" class=""><span>계정 만들기</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=%ED%8A%B9%EC%88%98:%EB%A1%9C%EA%B7%B8%EC%9D%B8&returnto=%EC%BA%90%EC%8B%9C" title="위키백과에 로그인하면 여러가지 편리한 기능을 사용할 수 있습니다. [o]" accesskey="o" class=""><span>로그인</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="더 많은 옵션" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="개인 도구" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">개인 도구</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="사용자 메뉴" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ko.wikipedia.org&uselang=ko"><span>기부</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%ED%8A%B9%EC%88%98:%EA%B3%84%EC%A0%95%EB%A7%8C%EB%93%A4%EA%B8%B0&returnto=%EC%BA%90%EC%8B%9C" title="계정을 만들고 로그인하는 것이 좋습니다. 하지만 필수는 아닙니다"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>계정 만들기</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%ED%8A%B9%EC%88%98:%EB%A1%9C%EA%B7%B8%EC%9D%B8&returnto=%EC%BA%90%EC%8B%9C" title="위키백과에 로그인하면 여러가지 편리한 기능을 사용할 수 있습니다. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>로그인</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> 로그아웃한 편집자를 위한 문서 <a href="/wiki/%EB%8F%84%EC%9B%80%EB%A7%90:%EC%86%8C%EA%B0%9C" aria-label="편집에 관해 더 알아보기"><span>더 알아보기</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/%ED%8A%B9%EC%88%98:%EB%82%B4%EA%B8%B0%EC%97%AC" title="이 IP 주소의 편집 목록 [y]" accesskey="y"><span>기여</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/%ED%8A%B9%EC%88%98:%EB%82%B4%EC%82%AC%EC%9A%A9%EC%9E%90%ED%86%A0%EB%A1%A0" title="현재 사용하는 IP 주소에 대한 토론 문서 [n]" accesskey="n"><span>토론</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="사이트"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="목차" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">목차</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">사이드바로 이동</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">숨기기</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">처음 위치</div> </a> </li> <li id="toc-여러_가지_캐시의_종류" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#여러_가지_캐시의_종류"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>여러 가지 캐시의 종류</span> </div> </a> <button aria-controls="toc-여러_가지_캐시의_종류-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>여러 가지 캐시의 종류 하위섹션 토글하기</span> </button> <ul id="toc-여러_가지_캐시의_종류-sublist" class="vector-toc-list"> <li id="toc-CPU_캐시" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#CPU_캐시"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>CPU 캐시</span> </div> </a> <ul id="toc-CPU_캐시-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-디스크_캐시" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#디스크_캐시"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>디스크 캐시</span> </div> </a> <ul id="toc-디스크_캐시-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-기타_캐시" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#기타_캐시"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>기타 캐시</span> </div> </a> <ul id="toc-기타_캐시-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-지역성" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#지역성"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>지역성</span> </div> </a> <button aria-controls="toc-지역성-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>지역성 하위섹션 토글하기</span> </button> <ul id="toc-지역성-sublist" class="vector-toc-list"> <li id="toc-시간적_지역성" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#시간적_지역성"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>시간적 지역성</span> </div> </a> <ul id="toc-시간적_지역성-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-공간적_지역성" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#공간적_지역성"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>공간적 지역성</span> </div> </a> <ul id="toc-공간적_지역성-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-같이_보기" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#같이_보기"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>같이 보기</span> </div> </a> <ul id="toc-같이_보기-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-외부_링크" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#외부_링크"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>외부 링크</span> </div> </a> <ul id="toc-외부_링크-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="목차" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="목차 토글" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">목차 토글</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">캐시</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="다른 언어로 문서를 방문합니다. 58개 언어로 읽을 수 있습니다" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-58" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">58개 언어</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Kasstelsel" title="Kasstelsel – 아프리칸스어" lang="af" hreflang="af" data-title="Kasstelsel" data-language-autonym="Afrikaans" data-language-local-name="아프리칸스어" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Cache" title="Cache – 독일어(스위스)" lang="gsw" hreflang="gsw" data-title="Cache" data-language-autonym="Alemannisch" data-language-local-name="독일어(스위스)" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B0%D8%A7%D9%83%D8%B1%D8%A9_%D9%85%D8%AE%D8%A8%D8%A6%D9%8A%D8%A9" title="ذاكرة مخبئية – 아랍어" lang="ar" hreflang="ar" data-title="ذاكرة مخبئية" data-language-autonym="العربية" data-language-local-name="아랍어" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Ke%C5%9F" title="Keş – 아제르바이잔어" lang="az" hreflang="az" data-title="Keş" data-language-autonym="Azərbaycanca" data-language-local-name="아제르바이잔어" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%B5%D1%88%D0%BF%D0%B0%D0%BC%D0%B5%D1%82" title="Кешпамет – 불가리아어" lang="bg" hreflang="bg" data-title="Кешпамет" data-language-autonym="Български" data-language-local-name="불가리아어" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%95%E0%A5%88%E0%A4%B6_(%E0%A4%95%E0%A4%82%E0%A4%AA%E0%A5%8D%E0%A4%AF%E0%A5%82%E0%A4%9F%E0%A4%BF%E0%A4%82%E0%A4%97)" title="कैश (कंप्यूटिंग) – Bhojpuri" lang="bh" hreflang="bh" data-title="कैश (कंप्यूटिंग)" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%95%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%B6_(%E0%A6%95%E0%A6%AE%E0%A7%8D%E0%A6%AA%E0%A6%BF%E0%A6%89%E0%A6%9F%E0%A6%BF%E0%A6%82)" title="ক্যাশ (কম্পিউটিং) – 벵골어" lang="bn" hreflang="bn" data-title="ক্যাশ (কম্পিউটিং)" data-language-autonym="বাংলা" data-language-local-name="벵골어" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Ke%C5%A1_memorija" title="Keš memorija – 보스니아어" lang="bs" hreflang="bs" data-title="Keš memorija" data-language-autonym="Bosanski" data-language-local-name="보스니아어" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Mem%C3%B2ria_cau" title="Memòria cau – 카탈로니아어" lang="ca" hreflang="ca" data-title="Memòria cau" data-language-autonym="Català" data-language-local-name="카탈로니아어" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Cache" title="Cache – 체코어" lang="cs" hreflang="cs" data-title="Cache" data-language-autonym="Čeština" data-language-local-name="체코어" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Cache" title="Cache – 덴마크어" lang="da" hreflang="da" data-title="Cache" data-language-autonym="Dansk" data-language-local-name="덴마크어" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Cache" title="Cache – 독일어" lang="de" hreflang="de" data-title="Cache" data-language-autonym="Deutsch" data-language-local-name="독일어" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9A%CF%81%CF%85%CF%86%CE%AE_%CE%BC%CE%BD%CE%AE%CE%BC%CE%B7" title="Κρυφή μνήμη – 그리스어" lang="el" hreflang="el" data-title="Κρυφή μνήμη" data-language-autonym="Ελληνικά" data-language-local-name="그리스어" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Cache_(computing)" title="Cache (computing) – 영어" lang="en" hreflang="en" data-title="Cache (computing)" data-language-autonym="English" data-language-local-name="영어" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Ka%C5%9Dmemoro" title="Kaŝmemoro – 에스페란토어" lang="eo" hreflang="eo" data-title="Kaŝmemoro" data-language-autonym="Esperanto" data-language-local-name="에스페란토어" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Cach%C3%A9_(inform%C3%A1tica)" title="Caché (informática) – 스페인어" lang="es" hreflang="es" data-title="Caché (informática)" data-language-autonym="Español" data-language-local-name="스페인어" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Vahem%C3%A4lu" title="Vahemälu – 에스토니아어" lang="et" hreflang="et" data-title="Vahemälu" data-language-autonym="Eesti" data-language-local-name="에스토니아어" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Cache_memoria" title="Cache memoria – 바스크어" lang="eu" hreflang="eu" data-title="Cache memoria" data-language-autonym="Euskara" data-language-local-name="바스크어" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AD%D8%A7%D9%81%D8%B8%D9%87_%D9%86%D9%87%D8%A7%D9%86_(%D8%B1%D8%A7%DB%8C%D8%A7%D9%86%D8%B4)" title="حافظه نهان (رایانش) – 페르시아어" lang="fa" hreflang="fa" data-title="حافظه نهان (رایانش)" data-language-autonym="فارسی" data-language-local-name="페르시아어" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/V%C3%A4limuisti" title="Välimuisti – 핀란드어" lang="fi" hreflang="fi" data-title="Välimuisti" data-language-autonym="Suomi" data-language-local-name="핀란드어" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/M%C3%A9moire_cache" title="Mémoire cache – 프랑스어" lang="fr" hreflang="fr" data-title="Mémoire cache" data-language-autonym="Français" data-language-local-name="프랑스어" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Cach%C3%A9" title="Caché – 갈리시아어" lang="gl" hreflang="gl" data-title="Caché" data-language-autonym="Galego" data-language-local-name="갈리시아어" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%96%D7%99%D7%9B%D7%A8%D7%95%D7%9F_%D7%9E%D7%98%D7%9E%D7%95%D7%9F" title="זיכרון מטמון – 히브리어" lang="he" hreflang="he" data-title="זיכרון מטמון" data-language-autonym="עברית" data-language-local-name="히브리어" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Priru%C4%8Dna_memorija" title="Priručna memorija – 크로아티아어" lang="hr" hreflang="hr" data-title="Priručna memorija" data-language-autonym="Hrvatski" data-language-local-name="크로아티아어" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Gyors%C3%ADt%C3%B3t%C3%A1r" title="Gyorsítótár – 헝가리어" lang="hu" hreflang="hu" data-title="Gyorsítótár" data-language-autonym="Magyar" data-language-local-name="헝가리어" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Cache" title="Cache – 인터링구아" lang="ia" hreflang="ia" data-title="Cache" data-language-autonym="Interlingua" data-language-local-name="인터링구아" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Tembolok_(komputer)" title="Tembolok (komputer) – 인도네시아어" lang="id" hreflang="id" data-title="Tembolok (komputer)" data-language-autonym="Bahasa Indonesia" data-language-local-name="인도네시아어" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Skyndiminni" title="Skyndiminni – 아이슬란드어" lang="is" hreflang="is" data-title="Skyndiminni" data-language-autonym="Íslenska" data-language-local-name="아이슬란드어" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Cache" title="Cache – 이탈리아어" lang="it" hreflang="it" data-title="Cache" data-language-autonym="Italiano" data-language-local-name="이탈리아어" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AD%E3%83%A3%E3%83%83%E3%82%B7%E3%83%A5_(%E3%82%B3%E3%83%B3%E3%83%94%E3%83%A5%E3%83%BC%E3%82%BF%E3%82%B7%E3%82%B9%E3%83%86%E3%83%A0)" title="キャッシュ (コンピュータシステム) – 일본어" lang="ja" hreflang="ja" data-title="キャッシュ (コンピュータシステム)" data-language-autonym="日本語" data-language-local-name="일본어" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9C%D3%99%D0%BB%D1%96%D0%BC%D0%B5%D1%82%D1%82%D0%B5%D1%80_%D0%B1%D2%AF%D1%80%D0%BA%D0%B5%D0%BC%D0%B5%D1%81%D1%96" title="Мәліметтер бүркемесі – 카자흐어" lang="kk" hreflang="kk" data-title="Мәліметтер бүркемесі" data-language-autonym="Қазақша" data-language-local-name="카자흐어" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Pod%C4%97liavimas" title="Podėliavimas – 리투아니아어" lang="lt" hreflang="lt" data-title="Podėliavimas" data-language-autonym="Lietuvių" data-language-local-name="리투아니아어" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Ke%C5%A1atmi%C5%86a" title="Kešatmiņa – 라트비아어" lang="lv" hreflang="lv" data-title="Kešatmiņa" data-language-autonym="Latviešu" data-language-local-name="라트비아어" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mhr mw-list-item"><a href="https://mhr.wikipedia.org/wiki/%D0%9A%D0%AD%D0%A8-%D1%88%D0%B0%D1%80%D0%BD%D1%8B%D1%88" title="КЭШ-шарныш – Eastern Mari" lang="mhr" hreflang="mhr" data-title="КЭШ-шарныш" data-language-autonym="Олык марий" data-language-local-name="Eastern Mari" class="interlanguage-link-target"><span>Олык марий</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/Cache" title="Cache – 몽골어" lang="mn" hreflang="mn" data-title="Cache" data-language-autonym="Монгол" data-language-local-name="몽골어" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B8%E0%A4%AF" title="सय – 마라티어" lang="mr" hreflang="mr" data-title="सय" data-language-autonym="मराठी" data-language-local-name="마라티어" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Cache" title="Cache – 말레이어" lang="ms" hreflang="ms" data-title="Cache" data-language-autonym="Bahasa Melayu" data-language-local-name="말레이어" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Cache_(tijdelijk_geheugen)" title="Cache (tijdelijk geheugen) – 네덜란드어" lang="nl" hreflang="nl" data-title="Cache (tijdelijk geheugen)" data-language-autonym="Nederlands" data-language-local-name="네덜란드어" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pap mw-list-item"><a href="https://pap.wikipedia.org/wiki/Cache" title="Cache – 파피아먼토어" lang="pap" hreflang="pap" data-title="Cache" data-language-autonym="Papiamentu" data-language-local-name="파피아먼토어" class="interlanguage-link-target"><span>Papiamentu</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Pami%C4%99%C4%87_podr%C4%99czna" title="Pamięć podręczna – 폴란드어" lang="pl" hreflang="pl" data-title="Pamięć podręczna" data-language-autonym="Polski" data-language-local-name="폴란드어" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Cache" title="Cache – 포르투갈어" lang="pt" hreflang="pt" data-title="Cache" data-language-autonym="Português" data-language-local-name="포르투갈어" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Memorie_cache" title="Memorie cache – 루마니아어" lang="ro" hreflang="ro" data-title="Memorie cache" data-language-autonym="Română" data-language-local-name="루마니아어" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D1%8D%D1%88" title="Кэш – 러시아어" lang="ru" hreflang="ru" data-title="Кэш" data-language-autonym="Русский" data-language-local-name="러시아어" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Cache_(computing)" title="Cache (computing) – Simple English" lang="en-simple" hreflang="en-simple" data-title="Cache (computing)" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/R%C3%BDchla_vyrovn%C3%A1vacia_pam%C3%A4%C5%A5" title="Rýchla vyrovnávacia pamäť – 슬로바키아어" lang="sk" hreflang="sk" data-title="Rýchla vyrovnávacia pamäť" data-language-autonym="Slovenčina" data-language-local-name="슬로바키아어" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Cache" title="Cache – 알바니아어" lang="sq" hreflang="sq" data-title="Cache" data-language-autonym="Shqip" data-language-local-name="알바니아어" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9A%D0%B5%D1%88_%D0%BC%D0%B5%D0%BC%D0%BE%D1%80%D0%B8%D1%98%D0%B0" title="Кеш меморија – 세르비아어" lang="sr" hreflang="sr" data-title="Кеш меморија" data-language-autonym="Српски / srpski" data-language-local-name="세르비아어" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Sindangan" title="Sindangan – 순다어" lang="su" hreflang="su" data-title="Sindangan" data-language-autonym="Sunda" data-language-local-name="순다어" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Cache" title="Cache – 스웨덴어" lang="sv" hreflang="sv" data-title="Cache" data-language-autonym="Svenska" data-language-local-name="스웨덴어" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Hifadhi_muda" title="Hifadhi muda – 스와힐리어" lang="sw" hreflang="sw" data-title="Hifadhi muda" data-language-autonym="Kiswahili" data-language-local-name="스와힐리어" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%81%E0%B8%84%E0%B8%8A" title="แคช – 태국어" lang="th" hreflang="th" data-title="แคช" data-language-autonym="ไทย" data-language-local-name="태국어" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C3%96nbellek" title="Önbellek – 터키어" lang="tr" hreflang="tr" data-title="Önbellek" data-language-autonym="Türkçe" data-language-local-name="터키어" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9A%D0%B5%D1%88" title="Кеш – 우크라이나어" lang="uk" hreflang="uk" data-title="Кеш" data-language-autonym="Українська" data-language-local-name="우크라이나어" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%DA%A9%DB%8C%D8%B4%DB%92_(%DA%A9%D9%85%D9%BE%DB%8C%D9%88%D9%B9%D9%86%DA%AF)" title="کیشے (کمپیوٹنگ) – 우르두어" lang="ur" hreflang="ur" data-title="کیشے (کمپیوٹنگ)" data-language-autonym="اردو" data-language-local-name="우르두어" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Cache_(tin_h%E1%BB%8Dc)" title="Cache (tin học) – 베트남어" lang="vi" hreflang="vi" data-title="Cache (tin học)" data-language-autonym="Tiếng Việt" data-language-local-name="베트남어" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%BC%93%E5%AD%98" title="缓存 – 우어" lang="wuu" hreflang="wuu" data-title="缓存" data-language-autonym="吴语" data-language-local-name="우어" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%BC%93%E5%AD%98" title="缓存 – 중국어" lang="zh" hreflang="zh" data-title="缓存" data-language-autonym="中文" data-language-local-name="중국어" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%B7%A9%E8%A1%9D%E8%A8%98%E6%86%B6%E9%AB%94" title="緩衝記憶體 – 광둥어" lang="yue" hreflang="yue" data-title="緩衝記憶體" data-language-autonym="粵語" data-language-local-name="광둥어" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q165596#sitelinks-wikipedia" title="언어 간 링크 편집" class="wbc-editpage">링크 편집</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="이름공간"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a 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data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">보이기</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">사이드바로 이동</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">숨기기</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">위키백과, 우리 모두의 백과사전.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ko" dir="ltr"><p><span class="nowrap"></span> </p> <div class="dablink hatnote"><span typeof="mw:File"><a href="/wiki/%EC%9C%84%ED%82%A4%EB%B0%B1%EA%B3%BC:%EB%8F%99%EC%9D%8C%EC%9D%B4%EC%9D%98%EC%96%B4_%EB%AC%B8%EC%84%9C" title="위키백과:동음이의어 문서"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/23px-Disambig_grey.svg.png" decoding="async" width="23" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/35px-Disambig_grey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/46px-Disambig_grey.svg.png 2x" data-file-width="260" data-file-height="200" /></a></span> 다른 뜻에 대해서는 <a href="/wiki/%EC%BA%90%EC%8B%9C_(%EB%8F%99%EC%9D%8C%EC%9D%B4%EC%9D%98)" class="mw-disambig" title="캐시 (동음이의)">캐시 (동음이의)</a> 문서를 참고하십시오.</div> <figure typeof="mw:File/Thumb"><a href="/wiki/%ED%8C%8C%EC%9D%BC:Cachebasic_kor.PNG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/6/62/Cachebasic_kor.PNG" decoding="async" width="320" height="140" class="mw-file-element" data-file-width="320" data-file-height="140" /></a><figcaption>동적 CPU 메모리 캐시 그림</figcaption></figure> <p><b>캐시</b>(cache, <span style="font-size: smaller;"><a href="/wiki/%EB%AC%B8%ED%99%94%EC%96%B4" title="문화어">문화어</a>:</span> 캐쉬, 고속완충기, 고속완충기억기)는 <a href="/wiki/%EC%BB%B4%ED%93%A8%ED%84%B0_%EA%B3%BC%ED%95%99" title="컴퓨터 과학">컴퓨터 과학</a>에서 데이터나 값을 미리 복사해 놓는 임시 장소를 가리킨다. 캐시는 캐시의 접근 시간에 비해 <a href="/wiki/%EB%AF%B8%EA%B0%80%EA%B3%B5_%EB%8D%B0%EC%9D%B4%ED%84%B0" title="미가공 데이터">미가공 데이터</a> 또는 <b>1차 데이터</b>(raw data or primary data)에 접근하는 시간이 오래 걸리는 경우나 값을 다시 계산하는 시간을 절약하고 싶은 경우에 사용한다. 캐시에 데이터를 미리 복사해 놓으면 계산이나 접근 시간없이 더 빠른 속도로 데이터에 접근할 수 있다. </p><p>캐시는 시스템의 효율성을 위해 여러 분야에서 두루 쓰이고 있다. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="여러_가지_캐시의_종류"><span id=".EC.97.AC.EB.9F.AC_.EA.B0.80.EC.A7.80_.EC.BA.90.EC.8B.9C.EC.9D.98_.EC.A2.85.EB.A5.98"></span>여러 가지 캐시의 종류</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=1" title="부분 편집: 여러 가지 캐시의 종류"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="CPU_캐시"><span id="CPU_.EC.BA.90.EC.8B.9C"></span>CPU 캐시</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=2" title="부분 편집: CPU 캐시"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r34311305">.mw-parser-output .hatnote{}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}</style><div role="note" class="hatnote navigation-not-searchable"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Icons8_flat_search.svg/18px-Icons8_flat_search.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Icons8_flat_search.svg/27px-Icons8_flat_search.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/52/Icons8_flat_search.svg/36px-Icons8_flat_search.svg.png 2x" data-file-width="512" data-file-height="512" /></span></span> 이 부분의 본문은 <a href="/wiki/CPU_%EC%BA%90%EC%8B%9C" title="CPU 캐시">CPU 캐시</a>입니다.</div> <p>대용량의 <a href="/wiki/%EA%B8%B0%EC%96%B5_%EC%9E%A5%EC%B9%98" title="기억 장치">메인 메모리</a> <a href="/wiki/%EC%95%A1%EC%84%B8%EC%8A%A4_(%EB%A7%88%EC%9D%B4%ED%81%AC%EB%A1%9C%ED%94%84%EB%A1%9C%EC%84%B8%EC%84%9C)" title="액세스 (마이크로프로세서)">액세스</a>를 빠르게 하기 위해 <a href="/wiki/%EC%A4%91%EC%95%99_%EC%B2%98%EB%A6%AC_%EC%9E%A5%EC%B9%98" title="중앙 처리 장치">CPU</a> 칩 내부에 별도로 탑재하는 작은 메모리이다. <a href="/wiki/1980%EB%85%84%EB%8C%80" title="1980년대">1980년대</a> 이후 대부분의 CPU는 하나, 많게는 5-6개까지의 서로 다른 기능을 가진 CPU 캐시를 장착하고 있다. 메모리 접근 속도가 늘어나는 것에 비해 CPU의 처리 속도가 훨씬 빠르게 향상되고 있기 때문에, 용량은 작지만 속도가 빠른 CPU 캐시는 현재 마이크로프로세서의 성능에 직접적인 영향을 미친다. </p> <div class="mw-heading mw-heading3"><h3 id="디스크_캐시"><span id=".EB.94.94.EC.8A.A4.ED.81.AC_.EC.BA.90.EC.8B.9C"></span>디스크 캐시</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=3" title="부분 편집: 디스크 캐시"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>디스크 캐시</b>는 <b>디스크 버퍼</b>라고 불리기도 한다. 1980년대 후반 이후 판매되는 대부분의 <a href="/wiki/%ED%95%98%EB%93%9C_%EB%94%94%EC%8A%A4%ED%81%AC" class="mw-redirect" title="하드 디스크">하드 디스크</a>는 디스크 제어와 외부와의 인터페이스를 위해 작은 컴퓨터를 내장하고 있다. 이 작은 컴퓨터는 대개 디스크에 입출력되는 데이터를 저장하는 작은 메모리를 갖고 있는데, 이를 디스크 캐시라고 한다. <a href="/wiki/2004%EB%85%84" title="2004년">2004년</a>에 판매되는 개인용 컴퓨터에 탑재된 디스크 캐시는 대개 2-32MB 정도의 크기를 갖는다. </p><p>디스크 캐시는 여러 가지 용도로 사용된다. </p> <ul><li>미리 읽기 : <a href="/wiki/%EC%9A%B4%EC%98%81_%EC%B2%B4%EC%A0%9C" class="mw-redirect" title="운영 체제">운영 체제</a>에서 디스크에 읽기/쓰기를 요청할 때, 디스크 암은 헤드를 해당하는 트랙에 올려 놓은 뒤 일정 시간이 걸려야 비로소 데이터를 읽을 수 있다. 그러나, 운영 체제는 대개 첫 번째 섹터 말고도 그 이후 섹터를 연이어 요구하는 경우가 많기 때문에 연속된 위치에 대한 반복적 접근 시간을 아끼기 위해 디스크는 뒷부분의 데이터를 미리 읽어서 캐시에 저장해 놓는다.</li></ul> <ul><li>속도 조절 : 디스크의 입출력 인터페이스는 대개 <a href="/w/index.php?title=%EB%94%94%EC%8A%A4%ED%81%AC_%ED%94%8C%EB%9E%98%ED%84%B0&action=edit&redlink=1" class="new" title="디스크 플래터 (없는 문서)">디스크 플래터</a>가 데이터를 읽어들이는 속도에 비해 훨씬 느리다. 그러므로 디스크 암이 빠르게 읽고 쓰기를 수행하기 위해 데이터를 인터페이스에 넘기기 전에 캐시에 잠시 저장해 놓는다.</li></ul> <ul><li>쓰기 가속 : 운영 체제가 디스크에 쓰기를 요청했을 때, 디스크 내부의 컴퓨터는 캐시에 데이터를 저장해 놓고 디스크 암이 쓰기를 끝내기도 전에 운영 체제에게 쓰기가 끝났음을 보고할 수 있다. 이렇게 하면 운영 체제는 디스크 쓰기가 끝나는 것을 기다릴 필요 없이 다음 작업을 신속하게 수행할 수 있다. 그러나 이 방법은 디스크 암이 쓰기를 마치기 앞서 전원이 차단되는 일이 일어나면 데이터가 사라지거나 <a href="/wiki/%ED%8C%8C%EC%9D%BC_%EC%8B%9C%EC%8A%A4%ED%85%9C" title="파일 시스템">파일 시스템</a>이 망가질 우려가 있어, 쓰기 가속 기법은 논쟁의 대상이 되고 있다. 최신 <a href="/wiki/RAID" title="RAID">RAID</a> 컨트롤러는 이 문제를 해결하기 위해 배터리를 이용한 백업 시스템을 구현하기도 하지만, 데이터 정확성을 중요하게 여기는 다른 시스템에서는 쓰기 가속 기법을 사용하지 않는 경우도 있다.</li></ul> <ul><li><a href="/w/index.php?title=%EB%AA%85%EB%A0%B9_%ED%81%90&action=edit&redlink=1" class="new" title="명령 큐 (없는 문서)">명령 큐</a> : 최신 <a href="/wiki/SATA" class="mw-redirect" title="SATA">시리얼 ATA</a> 디스크와 대부분의 <a href="/wiki/SCSI" title="SCSI">SCSI</a> 디스크는 다른 명령을 수행하고 있는 중에도 여러 개의 명령을 추가로 받을 수 있다. 이 명령 큐는 나중에 처리하기 위해 디스크 캐시에 저장된다. 명령 큐는 쓰기 가속과는 달리, 쓰기가 완전히 끝났을 때 운영 체제에게 그 사실을 알림으로써 파일 시스템의 정확성을 유지한다.</li></ul> <div class="mw-heading mw-heading3"><h3 id="기타_캐시"><span id=".EA.B8.B0.ED.83.80_.EC.BA.90.EC.8B.9C"></span>기타 캐시</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=4" title="부분 편집: 기타 캐시"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>CPU 캐시는 하드웨어를 통해 관리되고, 그 밖의 다른 캐시들은 대개 소프트웨어적으로 관리된다. 운영 체제의 메인 메모리를 하드 디스크에 복사해 놓는 페이지 캐시는 운영 체제 <a href="/wiki/%EC%BB%A4%EB%84%90_(%EC%BB%B4%ED%93%A8%ED%8C%85)" title="커널 (컴퓨팅)">커널</a>과 파일 시스템을 통해 관리된다. BIND <a href="/wiki/%EB%8F%84%EB%A9%94%EC%9D%B8_%EB%84%A4%EC%9E%84_%EC%8B%9C%EC%8A%A4%ED%85%9C" title="도메인 네임 시스템">DNS</a> 데몬은 도메인 이름과 IP 주소 사이의 매핑을 저장해 둔다. </p><p>신뢰성이 적은 네트워크(<a href="/wiki/%EC%9D%B4%EB%8D%94%EB%84%B7" title="이더넷">이더넷</a> 등)에서, 네트워크 사이에 주고 받는 데이터를 캐시해 놓는 것은 매우 흔한 일이다. 이를테면, <a href="/wiki/%EC%9B%B9_%EB%B8%8C%EB%9D%BC%EC%9A%B0%EC%A0%80" title="웹 브라우저">웹 브라우저</a>는 최근 방문한 사이트를 캐시에 저장해 놓는다. 많은 <a href="/wiki/%EC%9D%B8%ED%84%B0%EB%84%B7_%EC%A0%9C%EA%B3%B5%EC%97%85%EC%B2%B4" class="mw-redirect" title="인터넷 제공업체">인터넷 제공업체</a>들과 대규모 네트워크의 운영자들은 인기 있는 웹 페이지의 캐시를 <a href="/wiki/%ED%94%84%EB%A1%9D%EC%8B%9C_%EC%84%9C%EB%B2%84" title="프록시 서버">프록시 서버</a>에 저장하여 웹 페이지 요청에 응답하게 함으로써 네트워크 대역폭을 아낀다. </p><p><a href="/wiki/%EA%B5%AC%EA%B8%80" title="구글">구글</a> 검색 엔진은 검색 대상 사이트들의 내용을 캐시에 저장해 검색 엔진에 사용하기도 하고, 검색 결과의 일부로서 사용자들에게 보여 주기도 한다. </p> <div class="mw-heading mw-heading2"><h2 id="지역성"><span id=".EC.A7.80.EC.97.AD.EC.84.B1"></span>지역성</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=5" title="부분 편집: 지역성"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>캐시가 효율적으로 동작하려면, 캐시에 저장할 데이터가 지역성을 가져야 한다. 지역성이란 데이터 접근이 시간적, 혹은 공간적으로 가깝게 일어나는 것을 의미한다. </p> <div class="mw-heading mw-heading3"><h3 id="시간적_지역성"><span id=".EC.8B.9C.EA.B0.84.EC.A0.81_.EC.A7.80.EC.97.AD.EC.84.B1"></span>시간적 지역성</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=6" title="부분 편집: 시간적 지역성"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>특정 데이터가 한번 접근되었을 경우, 가까운 미래에 또 한번 데이터에 접근할 가능성이 높은 것을 시간적 지역성이라고 한다. </p><p>메모리 상의 같은 주소에 여러 차례 읽기 쓰기를 수행할 경우 상대적으로 작은 크기의 캐시를 사용해도 효율성을 꾀할 수 있다. </p> <div class="mw-heading mw-heading3"><h3 id="공간적_지역성"><span id=".EA.B3.B5.EA.B0.84.EC.A0.81_.EC.A7.80.EC.97.AD.EC.84.B1"></span>공간적 지역성</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=7" title="부분 편집: 공간적 지역성"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>특정 데이터와 가까운 주소가 순서대로 접근되었을 경우를 공간적 지역성이라고 한다. CPU 캐시나 디스크 캐시의 경우 한 메모리 주소에 접근할 때 그 주소뿐 아니라 해당 블록을 전부 캐시에 가져오게 된다. 이때 메모리 주소를 오름차순이나 내림차순으로 접근한다면, 캐시에 이미 저장된 같은 블록의 데이터를 접근하게 되므로 캐시의 효율성이 크게 향상된다. </p> <div class="mw-heading mw-heading2"><h2 id="같이_보기"><span id=".EA.B0.99.EC.9D.B4_.EB.B3.B4.EA.B8.B0"></span>같이 보기</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=8" title="부분 편집: 같이 보기"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r36480479">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><div class="side-box metadata side-box-right plainlinks"><style data-mw-deduplicate="TemplateStyles:r36480595">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist"><b><a href="/wiki/%EC%9C%84%ED%82%A4%EB%AF%B8%EB%94%94%EC%96%B4_%EA%B3%B5%EC%9A%A9" title="위키미디어 공용">위키미디어 공용</a></b>에 관련된<br />미디어 분류가 있습니다.<div style="padding-left:1em;"><b><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Cache?uselang=ko">캐시</a></b></div></div></div> </div> <ul><li><a href="/wiki/CPU_%EC%BA%90%EC%8B%9C" title="CPU 캐시">CPU 캐시</a></li> <li><a href="/wiki/%EB%B2%84%ED%8D%BC_%EC%BA%90%EC%8B%9C" title="버퍼 캐시">버퍼 캐시</a></li> <li><a href="/wiki/%EB%B2%84%ED%8D%BC_(%EC%BB%B4%ED%93%A8%ED%84%B0_%EA%B3%BC%ED%95%99)" title="버퍼 (컴퓨터 과학)">버퍼</a></li> <li><a href="/wiki/Dinero" title="Dinero">Dinero</a> (캐시 시뮬레이터)</li></ul> <div class="mw-heading mw-heading2"><h2 id="외부_링크"><span id=".EC.99.B8.EB.B6.80_.EB.A7.81.ED.81.AC"></span>외부 링크</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%EC%BA%90%EC%8B%9C&action=edit&section=9" title="부분 편집: 외부 링크"><span>편집</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.unilim.fr/sci/wiki/_media/cali/cpumemory.pdf">"What Every Programmer Should Know About Memory"</a><style data-mw-deduplicate="TemplateStyles:r36482206">.mw-parser-output .fix{background-color:#fff9f9;color:DarkSlateGray;border:1px solid #ffdcdc}</style><sup class="정리_필요 noprint">[<a href="/wiki/%EC%9C%84%ED%82%A4%EB%B0%B1%EA%B3%BC:%EA%B9%A8%EC%A7%84_%EB%A7%81%ED%81%AC" title="위키백과:깨진 링크">깨진 링크</a>(<a rel="nofollow" class="external text" href="https://web.archive.org/web/*/http://www.unilim.fr/sci/wiki/_media/cali/cpumemory.pdf">과거 내용 찾기</a>)]</sup> - <a href="/w/index.php?title=Ulrich_Drepper&action=edit&redlink=1" class="new" title="Ulrich Drepper (없는 문서)">Ulrich Drepper</a></li> <li><a rel="nofollow" class="external text" href="http://msdn.microsoft.com/en-us/library/dd129907.aspx">"Caching in the Distributed Environment"</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r36480591">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul 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