You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
3.8 KiB
92 lines
3.8 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<title>YaCy: Technology</title>
|
|
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
|
|
<!-- <meta name="Content-Language" content="German, Deutsch, de, at, ch"> -->
|
|
<meta name="Content-Language" content="English, Englisch">
|
|
<meta name="keywords" content="YaCy HTTP Proxy search engine spider indexer java network open free download Mac Windwos Software development">
|
|
<meta name="description" content="YaCy P2P Web Search: Technology">
|
|
<meta name="copyright" content="Michael Christen">
|
|
<script src="navigation.js" type="text/javascript"></script>
|
|
<link rel="stylesheet" media="all" href="style.css">
|
|
<!-- Realisation: Michael Christen; Contact: mc<at>anomic.de-->
|
|
</head>
|
|
<body bgcolor="#fefefe" marginheight="0" marginwidth="0" leftmargin="0" topmargin="0">
|
|
<SCRIPT LANGUAGE="JavaScript1.1"><!--
|
|
globalheader();
|
|
//--></SCRIPT>
|
|
<NOSCRIPT>
|
|
<table border="0" cellspacing="0" cellpadding="0" width="100%">
|
|
<tr><td></td></tr>
|
|
<tr><td height="1" bgcolor="#000000"></td></tr>
|
|
<tr><td>
|
|
<!-- start headline -->
|
|
<table bgcolor="#4070A0" border="0" cellspacing="0" cellpadding="0" width="100%">
|
|
<tr><td width="180" height="80" rowspan="3"><a href="http://www.yacy.net"><img border="0" src="grafics/yacy.gif" align="top"></a></td>
|
|
<td></td><td width="120"></td></tr>
|
|
</table>
|
|
<!-- end headline -->
|
|
</td></tr>
|
|
<tr><td height="2"></td></tr>
|
|
<tr><td>
|
|
<table border="0" cellspacing="0" cellpadding="0" width="100%">
|
|
<tr>
|
|
<td width="100" valign="top">
|
|
<!-- start lmenue -->
|
|
<table width="100%" border="0" cellspacing="0" cellpadding="0">
|
|
<tr><td height="2"></td></tr>
|
|
<tr><td height="20" class="white" bgcolor="#BDCDD4" valign="middle"> <a href="index.html" class="dark">Main Index</a></td></tr>
|
|
</table>
|
|
<!-- end lmenue -->
|
|
</td>
|
|
<td width="10" valign="top"></td>
|
|
<td valign="top">
|
|
<table border="0" cellspacing="0" cellpadding="0" width="100%">
|
|
<tr><td height="2"></td></tr>
|
|
<tr><td><br>
|
|
</NOSCRIPT>
|
|
<!-- ----- HERE STARTS CONTENT PART ----- -->
|
|
|
|
<h2>Web Search Technology</h2><br>
|
|
|
|
<p><img width="480" src="grafics/YaCy_Technology_Components.png" align="center"></p>
|
|
<p>YaCy consists mainly of four parts:
|
|
a <b>web crawler</b>, an <b>indexer</b>,
|
|
a built-in <b>database engine</b> and
|
|
the <b>p2p index exchange</b> protocol, based on http.
|
|
The YaCy search engine can be accessed through the <b>built-in http server</b>.
|
|
All parts of this architecture are included in the YaCy distribution.</p><br><br>
|
|
|
|
<p><img width="480" src="grafics/YaCy_Technology_UserInterface.png" align="center"></p>
|
|
<p>YaCy has a built-in http server,
|
|
and the user interface is realized as web pages on the own web server.
|
|
A search request to YaCy is done inside your web browser.
|
|
</p><br><br>
|
|
|
|
<p><img width="480" src="grafics/YaCy_Technology_Crawler.png" align="center"></p>
|
|
<p>A web search engine can only search web pages that had been <i>crawled</i>, which means that
|
|
all pages of subpages (and so on) of a start point had been loaded. YaCy has an integrated web crawler.</p><br><br>
|
|
|
|
<p><img width="480" src="grafics/YaCy_Technology_Indexing.png" align="center"></p>
|
|
<p>Before a huge number of web pages can be searched efficiently, the pages must be <i>indexed</i>.
|
|
This is a very difficult process which runs inside YaCy without any user action.
|
|
After indexing of web pages a single YaCy installation is able to provide search results
|
|
from more that 10 million of web pages efficiently.</p>
|
|
|
|
|
|
<!-- ----- HERE ENDS CONTENT PART ----- -->
|
|
<SCRIPT LANGUAGE="JavaScript1.1"><!--
|
|
globalfooter();
|
|
//--></SCRIPT>
|
|
<NOSCRIPT>
|
|
<br><br></td></tr></table>
|
|
</td>
|
|
<td width="10" valign="top">
|
|
</td>
|
|
</tr></table>
|
|
</td></tr></table>
|
|
</NOSCRIPT>
|
|
</body>
|
|
</html>
|