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Sun Java System Web Server 7.0 Update 7 Administrator's Configuration File Reference

compress-file

For dynamic compression of static files, compress-file SAF along with find-compressed SAF is used in Web Server 7.0 Update 7.

When a request is sent to the URI for the first time, the compress-file function creates a compressed file in the specified subdirectory, provided the file size is between min-size and max-size.

If check-age parameter is set to true, the compress-file function checks if the available compressed file version is as recent as the non-compressed file version. If not, it recreates a compressed file.

The find-compressed function checks if the compressed version of the requested file is available. It changes the path and directs to the compressed file under the following conditions:

The following table describes parameter for the compress-file filter.

Table 7–74 compress-file Parameter

Parameter 

Description 

subdir

(Optional) A directory name, relative to the directory in which the original non-compressed file is located. To overwrite a pre-compressed, compressed file lying in docroot, set the subdir to period (.). The default value is period (.), that is, current directory.

check-age

(Optional) Specifies whether to check if the compressed version is older than the non-compressed version. The values can be true or false. The default value is true.  

vary

(Optional) The values can be true or false. The default value is true.  

compression-level

(Optional) Controls the compression level used by the compression library. The values are from 1 to 9. A value of 1 results in the best speed. A value of 9 results in the best compression. The default value is 6.  

min-size

(Optional) The values are from 0 to INT_MAX. The default value is 256. 

max-size

Optional) The values are from min-size to INT_MAX. The default value is 1048576 

Example

<Objectname="default">
NameTrans fn="assign-name" from="*.html" name="find-compressed"
...
Service method=(GET|HEAD|POST) type=*~magnus-internal/* fn=compress-file
subdir=".compressed-files"
Service method=(GET|HEAD|POST) type=*~magnus-internal/* fn=send-file
...
</Object>

<Objectname="find-compressed">
PathCheck fn="find-compressed"
</Object>

See Also