Parameter
icm/HTTP/server_cache
Short text
Specify URL prefix and file system root of ICM server cache
Parameter Description
This is a vector parameter in the format [parameter name]_[index].
You can use this parameter to define the URI prefix and the target directory for the ICM’s internal HTTP server cache.
Syntax
icm/HTTP/server_cache = PREFIX=[uri prefix], CACHEDIR=[dir]
Meaning
[uri-prefix]
All HTTP URIs that begin with this character string are channeled through the ICM cache. This is to check whether a suitable HTTP response to the request already exists in the ICM cache. If this is the case, the response can be sent directly (in other words, without passing through the SAP application server) from the cache to the HTTP client (browser).
[dir]
Full file system path of the directory (in the local file system of the relevant application server) in which the data stored in the cache can be saved.
Example
icm/HTTP/server_cache_0= PREFIX=/foo/bar, CACHEDIR=/usr/cachedir This would mean that all HTTP requests for which the URI path began with “/foo/bar” are channeled through the cache in the directory “/usr/cachedir”.
Default
icm/HTTP/server_cache_0 = PREFIX=/, CACHEDIR=$(DIR_DATA)/cache By default, all HTTP requests (prefix “/”) are channeled through the cache, which is in the default “DATA” directory of the application server instance.
Application Area
Internet Communication Manager
Parameter Unit
See description above
Default Value
PREFIX=/, CACHEDIR=$(DIR_DATA)/cache
Who is permitted to make changes?
Customer
Operating System Restrictions
Specify the path delimiter for CACHEDIR as backslash (“\”) under Microsoft Windows, and as slash (“/”) under UNIX.
Database System Restrictions
–
Are other parameters affected or dependent?
All other parameters that affect the ICM cache are set up with a similar schema, such as:
icm/HTTP/server_cache/size_MB
icm/HTTP/server_cache/memory_size_MB
icm/HTTP/server_cache/max_entries
icm/HTTP/server_cache/max_name_len
icm/HTTP/server_cache/clear
icm/HTTP/server_cache/expiration
icm/HTTP/server_cache/ufo_list
icm/HTTP/server_cache/max_ufo_entries
icm/HTTP/server_cache/ufo_expiration
Values allowed
See above
icm/HTTP/server_cache/memory_size_MB
icm/HTTP/server_cache/max_entries
icm/HTTP/server_cache/max_name_len
icm/HTTP/server_cache/clear
icm/HTTP/server_cache/expiration
icm/HTTP/server_cache/ufo_list
icm/HTTP/server_cache/max_ufo_entries
icm/HTTP/server_cache/ufo_expiration
Values allowed
See above
