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📄 distributed_hash_table.htm

📁 DHT的入门介绍
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" dir="ltr" lang="en"><head>

	
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
				<meta name="keywords" content="Distributed hash table,Anonymity,Anonymous P2P,Anycast,Bandwidth,Big O notation,BitTorrent,CSpace,Chord (DHT),Codeen,Communications of the ACM">
		<link rel="shortcut icon" href="http://en.wikipedia.org/favicon.ico">
		<link rel="search" type="application/opensearchdescription+xml" href="http://en.wikipedia.org/w/opensearch_desc.php" title="Wikipedia (English)">
		<link rel="copyright" href="http://www.gnu.org/copyleft/fdl.html">
<link rel="alternate" type="application/rss+xml" title="Wikipedia RSS Feed" href="http://en.wikipedia.org/w/index.php?title=Special:Recentchanges&amp;feed=rss">
<link rel="alternate" type="application/atom+xml" title="Wikipedia Atom Feed" href="http://en.wikipedia.org/w/index.php?title=Special:Recentchanges&amp;feed=atom"><title>Distributed hash table - Wikipedia, the free encyclopedia</title>
		
		<style type="text/css" media="screen, projection">/*<![CDATA[*/
			@import "/skins-1.5/common/shared.css?102";
			@import "/skins-1.5/monobook/main.css?102";
		/*]]>*/</style>
		<link rel="stylesheet" type="text/css" media="print" href="Distributed_hash_table_files/commonPrint.css"><!--[if lt IE 5.5000]><style type="text/css">@import "/skins-1.5/monobook/IE50Fixes.css?102";</style><![endif]--><!--[if IE 5.5000]><style type="text/css">@import "/skins-1.5/monobook/IE55Fixes.css?102";</style><![endif]--><!--[if IE 6]><style type="text/css">@import "/skins-1.5/monobook/IE60Fixes.css?102";</style><![endif]--><!--[if IE 7]><style type="text/css">@import "/skins-1.5/monobook/IE70Fixes.css?102";</style><![endif]--><!--[if lt IE 7]><script type="text/javascript" src="/skins-1.5/common/IEFixes.js?102"></script>		<meta http-equiv="imagetoolbar" content="no" /><![endif]-->
		
		
		
		
		
		
		<script type="text/javascript">/*<![CDATA[*/
var skin = "monobook";
var stylepath = "/skins-1.5";
var wgArticlePath = "/wiki/$1";
var wgScriptPath = "/w";
var wgScript = "/w/index.php";
var wgServer = "http://en.wikipedia.org";
var wgCanonicalNamespace = "";
var wgCanonicalSpecialPageName = false;
var wgNamespaceNumber = 0;
var wgPageName = "Distributed_hash_table";
var wgTitle = "Distributed hash table";
var wgAction = "view";
var wgRestrictionEdit = [];
var wgRestrictionMove = [];
var wgArticleId = "192141";
var wgIsArticle = true;
var wgUserName = null;
var wgUserGroups = null;
var wgUserLanguage = "en";
var wgContentLanguage = "en";
var wgBreakFrames = false;
var wgCurRevisionId = "172945798";
/*]]>*/</script>
                
		<script type="text/javascript" src="Distributed_hash_table_files/wikibits.js"><!-- wikibits js --></script>
		<script type="text/javascript" src="Distributed_hash_table_files/index_002.php"><!-- site js --></script><script type="text/javascript" src="Distributed_hash_table_files/index_005.php"></script>
		<style type="text/css">/*<![CDATA[*/
@import "/w/index.php?title=MediaWiki:Common.css&usemsgcache=yes&action=raw&ctype=text/css&smaxage=2678400";
@import "/w/index.php?title=MediaWiki:Monobook.css&usemsgcache=yes&action=raw&ctype=text/css&smaxage=2678400";
@import "/w/index.php?title=-&action=raw&gen=css&maxage=2678400";
/*]]>*/</style><!-- Head Scripts -->
		
		<script type="text/javascript" src="Distributed_hash_table_files/ajax.js"></script>
	<style type="text/css">#siteNoticeSmall{display:none;}</style><style type="text/css">.siteNoticeToggle{display:none;}</style><style type="text/css">
#siteNotice {
        text-align: left;
        text-decoration: none;
        margin-top: 1.00em;
}
#siteNotice table {
        background-color: transparent;
        max-width: 98%;
}
.rtl #siteNotice {
        text-align: right;
}

.fundraiser-box,
.fundraiser-quote-box,
.fundraiser-blog {
        /* width: 622px; */
        width: 50em;
        font-style: normal;
}
.fundraiser-box td {
        padding: 0.25em;
        /*valign: bottom; not changing valign, as its not in css*/
}
.fundraiser-meter {
        width: 22.50em;
        height:  1.5em;
}
.fundraiser-button {
        width: 11.25em;
}
.fundraiser-quote-divider {
        margin-top: 0.75em;
        border-bottom: solid 0.06em #888;
}

/* Font selections */
.fundraiser-counter,
.fundraiser-headline,
.fundraiser-button {
        font-family: Gill Sans, Arial, sans-serif;
        font-size: 1.25em;
}

.fundraiser-blog {
        white-space: wrap;
        font-family: Gill Sans, Arial, sans-serif;
        font-size: 1.1em;
}

/* wrapping */
.fundraiser-button {
        white-space: nowrap;
}

.fundraiser-counter strong,
.fundraiser-headline strong {
        font-size: 1.75em;
}
.fundraiser-headline strong {
        font-family: Gill Sans Ultra Bold, Arial Black, sans-serif;
}
.fundraiser-button {
        font-weight: bold;
}
.fundraiser-quote {
        font-family: Monaco, monospace;
        font-size: 0.8em;
}
.fundraiser-box a {
        text-decoration: none; /* hide links */
}


/* Colors */
.fundraiser-box, .fundraiser-box a {
        color: black;
}
.fundraiser-counter, .fundraiser-counter a {
        color: #888;
}
.fundraiser-headline strong, .fundraiser-headline a strong {
        color: #339966;
}
.fundraiser-button, .fundraiser-button a {
        color: white; /* on red bg */
}

/* sigh */
.fundraiser-button-pre,
.fundraiser-button,
.fundraiser-button-post {
        height: 1.75em;
}

.fundraiser-button-pre,
.fundraiser-button-post {
        width: 0.50em;
        background-repeat: no-repeat;
}

.ltr .fundraiser-button-pre,
.rtl .fundraiser-button-post {
        background-image: url(http://upload.wikimedia.org/fundraising/2007/red-button-left.png);
        background-position: right center;
}
.fundraiser-button {
        background-image: url(http://upload.wikimedia.org/fundraising/2007/red-button-center.png);
        background-repeat: repeat-x;
        background-position: center;
}
.ltr .fundraiser-button-post,
.rtl .fundraiser-button-pre {
        background-image: url(http://upload.wikimedia.org/fundraising/2007/red-button-right.png);
        background-position: left center;
}

/* Text layout */
.fundraiser-counter { text-align: right; }
.rtl .fundraiser-counter { text-align: left; }

.fundraiser-headline { text-align: left; }
.rtl .fundraiser-headline { text-align: right; }

.fundraiser-button {
        text-align: center;
}
.fundraiser-quote .fundquote {
        padding-right: 1.5em;
}
.siteNoticeToggle {
        text-align: right;
	white-space: nowrap;
}
.rtl .siteNoticeToggle {
        text-align: left;
}

</style><script charset="utf-8" id="injection_graph_func" src="Distributed_hash_table_files/injection_graph_func.js"></script></head><body class="mediawiki ns-0 ltr page-Distributed_hash_table">
	<div id="globalWrapper">
		<div id="column-content">
	<div id="content">
		<a name="top" id="top"></a>
		<div id="siteNotice"><script type="text/javascript">
var wgNotice = "";
var wgNoticeLocal = "";
var wgNoticeLang = "en";
var wgNoticeProject = "wikipedia";
</script>
<script type="text/javascript" src="Distributed_hash_table_files/index_003.php"></script><script src="Distributed_hash_table_files/index_004.php"></script>



<script type="text/javascript" src="Distributed_hash_table_files/index.php"></script>
<script type="text/javascript">
if (wgNotice != "") {
  document.writeln(wgNotice);
}
if (wgNoticeLocal != "") {
  document.writeln(wgNoticeLocal);
}
</script>
<div id="sitenotice-fundraiser">
<div id="siteNoticeBig">
<table class="fundraiser-box" cellpadding="0" cellspacing="0">
        <tbody><tr>
                <td class="fundraiser-meter">
                        <a href="http://wikimediafoundation.org/wiki/Donate" class="hidelink"><img src="Distributed_hash_table_files/people-meter-ltr.png" height="42" width="300"></a>
                </td>
                <td class="fundraiser-counter" valign="bottom">
                        <a href="http://wikimediafoundation.org/wiki/Donate" class="hidelink"><strong>34,220</strong> have donated.</a>
                </td>
        </tr>
</tbody></table>
<table class="fundraiser-box" cellpadding="0" cellspacing="0">
        <tbody><tr>
                <td class="fundraiser-headline">
                        <a href="http://wikimediafoundation.org/wiki/Donate" class="hidelink"><strong>You</strong> can help Wikipedia change the world!</a>
                </td>
                <td class="fundraiser-button-pre">&nbsp;</td>
                <td class="fundraiser-button">
                        <a href="http://wikimediafoundation.org/wiki/Donate" class="hidelink"><nobr>禄 Donate now!</nobr></a>
                </td>
                <td class="fundraiser-button-post">&nbsp;</td>
        </tr>
</tbody></table>
<table class="fundraiser-blog">
        <tbody><tr>
                <td>
                        From the <a href="http://whygive.wikimedia.org/" class="external text" title="http://whygive.wikimedia.org" rel="nofollow">fundraising blog</a> 鈥

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