Description
This filter is on HTTP headers in a HttpServletRequest, compress data written to the HttpServletResponse, or decompress data read from the request. When supported by the client browser, this can potentially greatly reduce the number of bytes written across the network from and to the client. As a Filter, this class can also be easily added to any J2EE 1.3+ web application.
Installation
1).Add the pjl-comp-filter-XX.jar file containing CompressingFilter to your web application's WEB-INF/lib directory.
2).Add the following entries to your web.xml deployment descriptor:
<filter>
<filter-name>CompressingFilter</filter-name>
<filter-class>com.planetj.servlet.filter.compression.CompressingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CompressingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
The below data is of my application where i tested this compression techniques
The count is based on data fetched from fiddler when running app with and without compression Filter.
Data compression ratio=5:1
Header space savings =80%
Encoding used= gzip
Below header data is actual and after installing CompressingFilter.
This filter is on HTTP headers in a HttpServletRequest, compress data written to the HttpServletResponse, or decompress data read from the request. When supported by the client browser, this can potentially greatly reduce the number of bytes written across the network from and to the client. As a Filter, this class can also be easily added to any J2EE 1.3+ web application.
Installation
1).Add the pjl-comp-filter-XX.jar file containing CompressingFilter to your web application's WEB-INF/lib directory.
2).Add the following entries to your web.xml deployment descriptor:
<filter>
<filter-name>CompressingFilter</filter-name>
<filter-class>com.planetj.servlet.filter.compression.CompressingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CompressingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
The below data is of my application where i tested this compression techniques
The count is based on data fetched from fiddler when running app with and without compression Filter.
Data compression ratio=5:1
Header space savings =80%
Encoding used= gzip
Below header data is actual and after installing CompressingFilter.
| Before encoding | After using gzip encoding | |
Bytes Sent: 8,212 Bytes Received: 92,623 ACTUAL PERFORMANCE -------------- Requests started at: 17:58:52:1558 Responses completed at: 17:58:57:9514 Aggregate Session time: 00:00:05:1525 Sequence (clock) time: 00:00:05.7955795 RESPONSE CODES -------------- HTTP/404: 1 HTTP/304: 10 HTTP/200: 1 RESPONSE BYTES (by Content-Type) -------------- ~headers: 1,384 text/html: 91,239 |
Bytes Sent: 8,206 Bytes Received: 15,392 ACTUAL PERFORMANCE -------------- Requests started at: 18:30:13:7882 Responses completed at: 18:30:14:9522 Aggregate Session time: 00:00:00:7760 Sequence (clock) time: 00:00:01.1640000 RESPONSE CODES -------------- HTTP/404: 1 HTTP/304: 10 HTTP/200: 1 RESPONSE BYTES (by Content-Type) -------------- ~headers: 1,661 text/html: 13,731 |
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