Apache HTTP Server Version 2.2
Apache Module mod_disk_cache
| Description: | Content cache storage manager keyed to URIs |
|---|---|
| Status: | Extension |
| Module Identifier: | disk_cache_module |
| Source File: | mod_disk_cache.c |
Summary
mod_disk_cache implements a disk based storage
manager. It is primarily of use in conjunction with
mod_cache.
Content is stored in and retrieved from the cache using URI based keys. Content with access protection is not cached.
htcacheclean can be used to maintain the cache
size at a maximum level.
Note:
mod_disk_cache requires the services of
mod_cache.
Note:
mod_disk_cache uses the sendfile feature to
serve files from the cache when supported by the platform, and
when enabled with EnableSendfile.
However, per-directory and .htaccess configuration of
EnableSendfile are ignored by
mod_disk_cache as the corresponding settings are not
available to the module when a request is being served from the
cache.
CacheDirLength Directive
| Description: | The number of characters in subdirectory names |
|---|---|
| Syntax: | CacheDirLength length |
| Default: | CacheDirLength 2 |
| Context: | server config, virtual host |
| Status: | Extension |
| Module: | mod_disk_cache |
The CacheDirLength directive sets the number
of characters for each subdirectory name in the cache hierarchy.
The result of CacheDirLevels* CacheDirLength
must not be higher than 20.
CacheDirLength 4
CacheDirLevels Directive
| Description: | The number of levels of subdirectories in the cache. |
|---|---|
| Syntax: | CacheDirLevels levels |
| Default: | CacheDirLevels 3 |
| Context: | server config, virtual host |
| Status: | Extension |
| Module: | mod_disk_cache |
The CacheDirLevels directive sets the number
of subdirectory levels in the cache. Cached data will be saved this
many directory levels below the CacheRoot directory.
The result of CacheDirLevels*
CacheDirLength must
not be higher than 20.
CacheDirLevels 5
CacheMaxFileSize Directive
| Description: | The maximum size (in bytes) of a document to be placed in the cache |
|---|---|
| Syntax: | CacheMaxFileSize bytes |
| Default: | CacheMaxFileSize 1000000 |
| Context: | server config, virtual host |
| Status: | Extension |
| Module: | mod_disk_cache |
The CacheMaxFileSize directive sets the
maximum size, in bytes, for a document to be considered for storage in
the cache.
CacheMaxFileSize 64000
CacheMinFileSize Directive
| Description: | The minimum size (in bytes) of a document to be placed in the cache |
|---|---|
| Syntax: | CacheMinFileSize bytes |
| Default: | CacheMinFileSize 1 |
| Context: | server config, virtual host |
| Status: | Extension |
| Module: | mod_disk_cache |
The CacheMinFileSize directive sets the
minimum size, in bytes, for a document to be considered for storage
in the cache.
CacheMinFileSize 64
CacheRoot Directive
| Description: | The directory root under which cache files are stored |
|---|---|
| Syntax: | CacheRoot directory |
| Context: | server config, virtual host |
| Status: | Extension |
| Module: | mod_disk_cache |
The CacheRoot directive defines the name of
the directory on the disk to contain cache files. If the mod_disk_cache module has been loaded or compiled in to the
Apache server, this directive must be defined. Failing to
provide a value for CacheRoot will result in
a configuration file processing error. The CacheDirLevels and CacheDirLength directives define
the structure of the directories under the specified root directory.
CacheRoot c:/cacheroot