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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>36.2.2 Managing web pages</TITLE><META NAME="description" CONTENT="36.2.2 Managing web pages"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="next" HREF="node502.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node502.html"><LINK REL="previous" HREF="node498.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node498.html"><LINK REL="up" HREF="node497.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node497.html"><LINK REL="next" HREF="node502.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node502.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html9121" HREF="node502.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node502.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html9115" HREF="node497.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node497.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html9109" HREF="node500.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node500.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html9117" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html9119" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html9122" HREF="node502.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node502.html">36.2.3 Debugging</A><B> Up:</B> <A NAME="tex2html9116" HREF="node497.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node497.html">36.2 Overview of web</A><B> Previous:</B> <A NAME="tex2html9110" HREF="node500.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node500.html">36.2.1.0.2 Configuration parameter</A>   <B> <A NAME="tex2html9118" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html9120" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H2><A NAME="SECTION07222000000000000000"></A><A NAME="sec:webcache-page"></A><BR>36.2.2 Managing web pages</H2><P>Http also provides OTcl interfaces to manage a set of pages. The real management of pages are handled by class <TT>PagePool</TT> and itssubclasses. Because different HTTP objects have different requirementsfor page management, we allow different PagePool subclasses to be attachedto different subclasses of Http class. Meanwhile, we exporta common set of PagePool interfaces to OTcl throughHttp. For example, a browser may use a PagePool only to generate a request stream, so its PagePool only needs to contain a list of URLs. Buta cache may want to store page size, last modification time of every page instead of a list of URLs. However, this separation is not clearcut in the current implementation. <P>Page URLs are represented in the form of:<TT>ServerName:SequenceNumber</TT>where the <TT>ServerName</TT> is the name of OTcl object, and every page in every server should have a unique <TT>SequenceNumber</TT>. Page contents are ignored. Instead, every page contains several <I>attributes</I>, which are represented in OTcl as a list of the following (name value) pairs: ``modtime val'' (page modification time), ``size val'' (page size), and ``age val''}The ordering of these pairs is not significant.<P>Following is a list of related OTcl methods.<P><BR><BR><P><HR><!--Navigation Panel--><A NAME="tex2html9121" HREF="node502.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node502.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html9115" HREF="node497.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node497.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html9109" HREF="node500.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node500.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html9117" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html9119" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html9122" HREF="node502.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node502.html">36.2.3 Debugging</A><B> Up:</B> <A NAME="tex2html9116" HREF="node497.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node497.html">36.2 Overview of web</A><B> Previous:</B> <A NAME="tex2html9110" HREF="node500.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node500.html">36.2.1.0.2 Configuration parameter</A>   <B> <A NAME="tex2html9118" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html9120" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <!--End of Navigation Panel--><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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