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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 href="#module">Module</a> |
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| <P><HR> |
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| <H2><A NAME="core">Core Enhancements:</A></H2> |
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| <DL> |
| <DT><STRONG>Unix Threading</STRONG> |
| <DD>On Unix systems with POSIX threads support, Apache can now run in a |
| hybrid multiprocess, multithreaded mode. This should improve |
| scalability. |
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| <DT><STRONG>New Build System</STRONG> |
| <DD>The build system has been rewritten from scratch to be based on |
| autoconf and libtool. This makes Apache's configuration system more |
| similar to that of other packages. |
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| <DT><STRONG>Multiprotocol Support</STRONG> |
| <DD>Apache now has some of the infrastructure in place to support serving |
| multiple protocols. mod_echo has been written as an example. |
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| <DT><STRONG>Better support for non-Unix platforms</STRONG> <DD>Apache |
| 2.0 is faster and more stable on non-Unix platforms such as BeOS, |
| OS/2, and Windows. With the introduction of platform-specific <a |
| href="mpm.html">multi-processing modules</a> (MPMs) and the Apache |
| Portable Runtime (APR), these platforms are now implemented in their |
| native API, avoiding the often buggy and poorly performing |
| POSIX-emulation layers. |
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| <DT><STRONG>New Apache API</STRONG> |
| <DD>The API for modules has changed significantly for 2.0. Many of the |
| module-ordering problems from 1.3 should be gone. 2.0 does much of |
| this automatically, and module ordering is now done per-hook to |
| allow more flexibility. Also, new calls have been added that provide |
| additional module capabilities without patching the core Apache server. |
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| <DT><STRONG>IPv6 Support</STRONG></DT> |
| <DD>On systems where IPv6 is supported by the underlying Apache |
| Portable Runtime library, Apache gets IPv6 listening sockets by |
| default. Additionally, the Listen, NameVirtualHost, and |
| <VirtualHost> directives support IPv6 numeric address |
| strings (e.g., "Listen [fe80::1]:8080").</DD> |
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| <DT><STRONG>Filtering</STRONG></DT> |
| <DD>Apache modules may now be written as filters which act on the |
| stream of content as it is delivered to or from the server. This |
| allows, for example, the output of CGI scripts to be parsed for |
| Server Side Include directive by mod_include.</DD> |
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| </DL> |
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| <P><HR> |
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| <H2><A NAME="module">Module Enhancements:</A></H2> |
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| <dl> |
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| <dt><strong>mod_auth_db</strong> |
| <dd>Now supports Berkely DB 3.0 |
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| <dt><strong>mod_auth_digest</strong> |
| <dd>Includes additional support for session caching across processes |
| using shared memory. |
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| <dt><strong>mod_charset_lite</strong> <dd>New module in Apache 2.0. |
| This experimental module allows for character set translation |
| or recoding. |
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| <dt><strong>mod_dav</strong> |
| <dd>New module in Apache 2.0. This module implements the |
| HTTP Distributed Authoring and Versioning (DAV) specification for |
| posting and maintaining web content. |
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| <dt><strong>mod_file_cache</strong> |
| <dd>New module in Apache 2.0. This module includes the functionality |
| of mod_mmap_static in Apache 1.3, plus adds further caching abilities. |
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| </dl> |
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