The fast response cache accelerator (FRCA) can improve the performance
of the IBM HTTP Server when serving static content, such as text and image
files. Support for FRCA is on AIX and Windows systems only.
About this task
When FRCA is enabled, the default configuration setting allows
all static files to be cached. The cache automatically loads during server
operation so that individual files do not need to be listed. Use the AfpaCache
directive to turn caching on or off for specific directories.
FRCA
will remove files from the cache when they change to avoid serving stale content.
Procedure
- To enable FRCA, edit the httpd.conf configuration file
and delete the comment character (#) from the beginning of the LoadModule
directive as follows:
#LoadModule ibm_afpa_module modules/mod_afpa_cache.so
becomesLoadModule ibm_afpa_module modules/mod_afpa_cache.so
- Enable IBM HTTP Server for dynamic page caching. You
can use FRCA with WebSphere Application Server to cache certain dynamically-generated
servlet and JavaServer Pages (JSP) files. This feature is only available on
Windows versions of IBM HTTP Server.
The afpaplugin_20.dll component
that is compatible with IBM HTTP Server V6.0 and later must be configured
by WebSphere Application Server.
For details on how to enable this capability,
see the external caching description in the WebSphere Application Server documentation.