What is new in this release

64-bit runtime on the Windows operating system

Beginning in fix pack 9.0.5.4, a first-time installation of IBM HTTP Server on the Windows operating system is a 64-bit runtime. For more information, see Install IBM HTTP Server on distributed systems with Installation Manager.

The 64-bit runtime depends on the Visual C++ Redistributable Packages. For more information, see Dependencies required by IBM HTTP Server on Windows.

As of the 9.0.5.2 release, IBM HTTP Server supports the TSLv1.3 protocol. For more information, see SSL Directives.

For fix pack 9.0.0.6 and later, we can install IBM HTTP Server from an archive install without the IBM Installation Manager. See Install and configure IBM HTTP Server from an archive for more information.

Learn to migrate an IBM HTTP Server, Version 7 or 8 server, to IBM HTTP Server 9.0. For more information, see Migrate to IBM HTTP Server 9.0.

mod_ibm_ssl added support for certificate selection, based on TLS Server Name Indication (SNI) extensions.
A new configuration option, <if>, allows complex conditions to enclose Apache directives.
A number of directives now support a robust expression language.
We can now group authorization directives Require in <RequireAny>, or <RequireAll>.
The event MPM is available on Linux®.
The ProxyRemote directive now works with SSLProxyEngine.
The bundled PCRE is updated.

We can specify the LogLevel directive per-directory, per-module, and per-request.
Log levels TRACE1 through TRACE8 were added.
Many Apache HTTP Server messages now include an AHnnnnn identifier.
The error log format is user configurable. For more information, see the ErrorLogFormat directives.
Higher precision time stamps are available in the error log.

RC4 is disabled by default.
The default configuration reduced the mod_mpmstats ReportInterval directive from 600 to 300.
mod_mpmstats now displays the number of keepalive requests, even though they do not occupy a thread. In prior releases, mpmstats would always show a value of zero.
TLS1.1, TLS1.2, and ECC ciphers are enabled by default if ICSF is configured at startup.
mod_deflate.so uses offload by default and mod_deflate_z.so is no longer provided.

The mod_mem_cache module is provided for transition purposes only and were removed.
mod_ibm_ldap
WebSphereCE modules, mod_proxy_balancer and mod_proxy_ajp
32-bit builds were removed for AIX®, Linux on ia32, Linux on PPC, Linux on S390, Solaris on SPARC.