new_features_2_2.html.en revision 281c0b44de97d9942428ff51bc2be0e8e61ed87b
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
This file is generated from xml source: DO NOT EDIT
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
-->
<title>Overview of new features in Apache 2.2 - Apache HTTP Server</title>
<link href="/style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
<link href="/style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
<body id="manual-page"><div id="page-header">
<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="/faq/">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p>
<p class="apache">Apache HTTP Server Version 2.1</p>
<div id="path">
<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="./">Version 2.1</a></div><div id="page-content"><div id="preamble"><h1>Overview of new features in Apache 2.2</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="/en/new_features_2_2.html" title="English"> en </a> |
<a href="/ko/new_features_2_2.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
<a href="/pt-br/new_features_2_2.html" hreflang="pt-br" rel="alternate" title="Portugu�s (Brasil)"> pt-br </a></p>
</div>
<p>This document describes some of the major changes between the
2.0 and 2.2 versions of the Apache HTTP Server. For new features since
document.</p>
</div>
<div id="quickview"><ul id="toc"><li><img alt="" src="/images/down.gif" /> <a href="#core">Core Enhancements</a></li>
</ul></div>
<div class="section">
<h2><a name="core" id="core">Core Enhancements</a></h2>
<dl>
<dd>The bundled authentication and authorization modules have
been refactored. There is a new authentication backend provider
scheme which greatly eases the construction of new authentication
backends.</dd>
<dt>Caching</dt>
<dd><code class="module"><a href="/mod/mod_cache.html">mod_cache</a></code>, <code class="module"><a href="/mod/mod_disk_cache.html">mod_disk_cache</a></code>, and
<code class="module"><a href="/mod/mod_mem_cache.html">mod_mem_cache</a></code> have undergone a lot of changes
are now considered production-quality. <code class="program"><a href="/programs/htcacheclean.html">htcacheclean</a></code>
has been introduced to cleanup <code class="module"><a href="/mod/mod_disk_cache.html">mod_disk_cache</a></code>
setups.</dd>
<dt>Proxying</dt>
<dd>The new <code class="module"><a href="/mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code> module provides
load balancing services for <code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code>.
The new <code class="module"><a href="/mod/mod_proxy_ajp.html">mod_proxy_ajp</a></code> module adds support for the
<code>Apache JServ Protocol version 1.3</code> used by
<dt>Regular Expression Library Updated</dt>
<dd>Version 5.0 of the
<a href="http://www.pcre.org/">Perl Compatible Regular Expression
Library</a> (PCRE) is now included.</dd>
<dt>Smart Filtering</dt>
<dd><code class="module"><a href="/mod/mod_filter.html">mod_filter</a></code> introduces dynamic configuration
to the output filter chain. It enables filters to be conditionally
inserted, based on any Request or Response header or environment
variable, and dispenses with the more problematic dependencies and
ordering problems in the 2.0 architecture.</dd>
<dt>Large File Support</dt>
<dd>httpd is now built with support for files larger than 2Gb on
modern 32-bit Unix systems. Support for handling >2Gb request
bodies has also been added.</dd>
<dt>Event MPM</dt>
<dd>The <code class="module"><a href="/mod/event.html">event</a></code> MPM uses a seperate thread to handle
Keep Alive requests and accepting connections. Keep Alive requests
have traditionally required httpd to dedicate a worker to handle it.
This dedicated worker could not be used again until the Keep Alive
timeout was reached.</dd>
</dl>
<div class="section">
<h2><a name="module" id="module">Module Enhancements</a></h2>
<dl>
<dd>This module is a port of the 2.0
framework. New features include using LDAP attribute values and
complicated search filters in the
<dd>Added a new <code>?config</code> argument which will show
the configuration directives as parsed by Apache, including
their file name and line number. The module also
shows the order of all request hooks and additional
build information, similar to <code>httpd -V</code>.</dd>
<dd>Added a support for
allows connections to upgrade from clear text to TLS encryption.</dd>
</dl>
<div class="section">
<h2><a name="programs" id="programs">Program Enhancements</a></h2>
<dl>
<dd>A new command line option <code>-M</code> has been added that
lists all modules that are loaded based on the current
configuration. Unlike the <code>-l</code> option, this list
</dl>
<div class="section">
<h2><a name="developer" id="developer">Module Developer Changes</a></h2>
<dl>
<dt>APR 1.0 API</dt>
<dd>Apache 2.2 uses the APR 1.0 API. All deprecated functions and
symbols have been removed from <code>APR</code> and
<code>APR-Util</code>. For details, see the
<dt>Connection Error Logging</dt>
<dd>A new function, <code>ap_log_cerror</code> has been added to log
errors that occure with the client's connection. When logged,
the message includes the client IP address.</dd>
<dt>Test Configuration Hook Added</dt>
<dd>A new hook, <code>test_config</code> has been added to aid
modules that want to execute special code only when the user passes
<dt>Set Threaded MPM's Stacksize</dt>
<dd>A new directive, <code>ThreadStackSize</code> has been added to
set the stack size on all threaded MPMs. This is required
for some third-party modules on platforms with small default
thread stack size.</dd>
<dt>Protocol handling for output filters</dt>
<dd>In the past, every filter has been responsible for ensuring
that it generates the correct response headers where it affects
them. Filters can now delegate common protocol management to
<code>ap_register_output_filter_protocol</code> or
<code>ap_filter_protocol</code> calls.</dd>
</dl>
</div></div>
<div class="bottomlang">
<p><span>Available Languages: </span><a href="/en/new_features_2_2.html" title="English"> en </a> |
<a href="/ko/new_features_2_2.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
<a href="/pt-br/new_features_2_2.html" hreflang="pt-br" rel="alternate" title="Portugu�s (Brasil)"> pt-br </a></p>
</div><div id="footer">
<p class="apache">Copyright 1995-2005 The Apache Software Foundation or its licensors, as applicable.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="/faq/">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p></div>
</body></html>