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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93539 13f79535-47bb-0310-9956-ffa450edef68
202 lines
7.7 KiB
Plaintext
202 lines
7.7 KiB
Plaintext
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org" />
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<title>New features with Apache 2.0</title>
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</head>
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<!-- Background white, links blue (unvisited), navy (visited), red (active) -->
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<body bgcolor="#FFFFFF" text="#000000" link="#0000FF"
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vlink="#000080" alink="#FF0000">
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<!--#include virtual="header.html" -->
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<h1 align="CENTER">Overview of New Features in Apache 2.0</h1>
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<p>Enhancements: <a href="#core">Core</a> | <a
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href="#module">Module</a></p>
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<hr />
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<h2><a id="core" name="core">Core Enhancements:</a></h2>
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<dl>
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<dt><strong>Unix Threading</strong></dt>
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<dd>On Unix systems with POSIX threads support, Apache can
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now run in a hybrid multiprocess, multithreaded mode. This
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improves scalability for many, but not all configurations.</dd>
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<dt><strong>New Build System</strong></dt>
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<dd>The build system has been rewritten from scratch to be
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based on autoconf and libtool. This makes Apache's
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configuration system more similar to that of other
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packages.</dd>
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<dt><strong>Multiprotocol Support</strong></dt>
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<dd>Apache now has some of the infrastructure in place to
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support serving multiple protocols. mod_echo has been written
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as an example.</dd>
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<dt><strong>Better support for non-Unix
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platforms</strong></dt>
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<dd>Apache 2.0 is faster and more stable on non-Unix
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platforms such as BeOS, OS/2, and Windows. With the
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introduction of platform-specific <a
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href="mpm.html">multi-processing modules</a> (MPMs) and the
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Apache Portable Runtime (APR), these platforms are now
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implemented in their native API, avoiding the often buggy and
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poorly performing POSIX-emulation layers.</dd>
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<dt><strong>New Apache API</strong></dt>
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<dd>The API for modules has changed significantly for 2.0.
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Many of the module-ordering/-priority problems from 1.3 should
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be gone. 2.0 does much of this automatically, and module ordering
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is now done per-hook to allow more flexibility. Also, new calls
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have been added that provide additional module capabilities
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without patching the core Apache server.</dd>
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<dt><strong>IPv6 Support</strong></dt>
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<dd>On systems where IPv6 is supported by the underlying
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Apache Portable Runtime library, Apache gets IPv6 listening
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sockets by default. Additionally, the Listen,
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NameVirtualHost, and <VirtualHost> directives support
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IPv6 numeric address strings (e.g., "Listen
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[fe80::1]:8080").</dd>
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<dt><strong>Filtering</strong></dt>
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<dd>Apache modules may now be written as filters which act on
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the stream of content as it is delivered to or from the
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server. This allows, for example, the output of CGI scripts
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to be parsed for Server Side Include directives using the
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INCLUDES filter in mod_include.</dd>
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<dt><strong>Multilanguage Error Responses</strong></dt>
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<dd>Error response messages to the browser are now provided in
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several languages, using SSI documents. They may be customized
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by the administrator to achieve a consistent look and feel.</dd>
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<dt><strong>Simplified configuration</strong></dt>
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<dd>Many confusing directives have been simplified. The often
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confusing Port and BindAddress directives are gone; only the
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Listen directive is used for IP address binding; the
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ServerName directive specifies the server name and port number
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only for redirection and vhost recognition.</dd>
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<dt><strong>Native Windows NT Unicode Support</strong></dt>
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<dd>Apache 2.0 on Windows NT now uses utf-8 for all filename
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encodings. These directly translate to the underlying Unicode
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file system, providing multilanguage support for all Windows
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NT-based installations, including Windows 2000 and Windows XP.
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<em>This support does not extend to Windows 95, 98 or ME, which
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continue to use the machine's local codepage for filesystem
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access.</em></dd>
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</dl>
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<hr />
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<h2><a id="module" name="module">Module Enhancements:</a></h2>
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<dl>
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<dt><strong>mod_ssl</strong></dt>
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<dd>New module in Apache 2.0. This module is an interface
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to the SSL/TLS encryption protocols provided by
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OpenSSL.</dd>
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<dt><strong>mod_dav</strong></dt>
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<dd>New module in Apache 2.0. This module implements the HTTP
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Distributed Authoring and Versioning (DAV) specification for
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posting and maintaining web content.</dd>
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<dt><strong>mod_auth_digest</strong></dt>
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<dd>Includes additional support for session caching across
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processes using shared memory.</dd>
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<dt><strong>mod_charset_lite</strong></dt>
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<dd>New module in Apache 2.0. This experimental module allows
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for character set translation or recoding.</dd>
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<dt><strong>mod_file_cache</strong></dt>
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<dd>New module in Apache 2.0. This module includes the
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functionality of mod_mmap_static in Apache 1.3, plus adds
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further caching abilities.</dd>
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<dt><strong>mod_headers</strong></dt>
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<dd>This module is much more flexible in Apache 2.0. It can
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now modify request headers used by mod_proxy, and it can
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conditionally set response headers.</dd>
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<dt><strong>mod_proxy</strong></dt>
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<dd>The proxy module has been completely rewritten to take advantage
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of the new filter infrastructure and to implement a more
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reliable, HTTP/1.1 compliant proxy. In addition, new
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<Proxy> configuration sections provide more readable
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(and internally faster) control of proxied sites; overloaded
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<Directory "proxy:..."> configuration are not supported. The
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module is now divided into specific protocol support modules
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including proxy_connect, proxy_ftp and proxy_http.</dd>
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<dt><strong>mod_negotiation</strong></dt>
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<dd>A new <a
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href="mod/mod_negotiation.html#forcelanguagepriority"
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>ForceLanguagePriority</a>
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directive can be used to assure that the client receives a
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single document in all cases, rather than NOT ACCEPTABLE or
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MULTIPLE CHOICES responses. In addition, the negotiation and MultiViews
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algorithms have been cleaned up to provide more consistent
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results and a new form of type map that can include document
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content is provided.</dd>
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<dt><strong>mod_autoindex</strong></dt>
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<dd>Autoindex'ed directory listings can now be configured to
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use HTML tables for cleaner formatting, and allow finer-grained
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control of sorting, including version-sorting, and wildcard
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filtering of the directory listing.</dd>
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<dt><strong>mod_include</strong></dt>
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<dd>New directives allow the default start and end tags for SSI elements
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to be changed and allow for error and time format configuration
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to take place in the main configuration file rather than in the
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SSI document. Results from regular expression parsing and grouping
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(now based on Perl's regular expression syntax) can be retrieved
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using mod_include's variables $0 .. $9.</dd>
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<dt><strong>mod_auth_dbm</strong></dt>
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<dd>Now supports multiple types of DBM-like databases using the
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<a
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href="mod/mod_auth_dbm.html#authdbmtype">AuthDBMType</a>
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directive.</dd>
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<dt><strong>mod_auth_db</strong></dt>
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<dd>Has been removed in favor of mod_auth_dbm with the AuthDBMType
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directive.</dd>
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</dl>
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<!--#include virtual="footer.html" -->
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</body>
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</html>
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