Tomcat with Gzip and cache

Original address: http://benx.iteye.com/blog/561998

The method of configuring Gzip in Tomcat is to modify the previous configuration in the Conf/server.xml file to

Java code

2. <connector
4. port= "8080" maxhttpheadersize="8192 "
6. maxthreads= "minsparethreads=" "maxsparethreads= "
8. enablelookups="false" redirectport="8443" acceptcount="
10. connectiontimeout="20000" disableuploadtimeout="true"
12. compression="on"
14. compressionminsize="2048"
16. nocompressionuseragents="Gozilla, Traviata"
18. Compressablemimetype="Text/html,text/xml,text/javascript,text/css,text/plain"/>
22. />

Tested before the compression of the size of 1.5M after compression only 10K, may be and have a lot of duplication of data about, response speed also has the previous 2.5 seconds to 275ms

Configured header file you'll find that out.

HTML code

2. Response header Information
4. Server apache-coyote/1.1
6. Set-cookie jsessionid=072d9b189c4aa9da4d4ad0b6c2c89e50; path=/test
8. Content-type text/html; charset=iso-8859-1
10. Transfer-encoding chunked
12. Content-encoding gzip
14. Vary accept-encoding
16. Date Mon, Jan 04:49:38 GMT
18. Request header Information
20. Host localhost:8080
22. User-agent mozilla/5.0 (Windows; U Windows NT 5.1; ZH-CN; rv:1.9.1.6) gecko/20091201 firefox/3.5.6
24. Accept Text/html,application/xhtml+xml,application/xml; q=0.9,*/*; q=0.8
26. Accept-language Zh-cn,zh; q=0.5
28. Accept-encoding gzip,deflate
30. Accept-charset Gb2312,utf-8; q=0.7,*; q=0.7
32. Keep-alive 300
34. Connection keep-alive
36. Cookie jsessionid=1c8db59ac74495495ed374b13c3d930a
38. Cache-control max-age=0

No match before the

HTML code

2. Response header Information
4. Server apache-coyote/1.1
6. Content-type text/html; charset=iso-8859-1
8. Transfer-encoding chunked
10. Date Mon, Jan 04:54:00 GMT
12. Request header Information
14. Host localhost:8080
16. User-agent mozilla/5.0 (Windows; U Windows NT 5.1; ZH-CN; rv:1.9.1.6) gecko/20091201 firefox/3.5.6
18. Accept Text/html,application/xhtml+xml,application/xml; q=0.9,*/*; q=0.8
20. Accept-language Zh-cn,zh; q=0.5
22. Accept-encoding gzip,deflate
24. Accept-charset Gb2312,utf-8; q=0.7,*; q=0.7
26. Keep-alive 300
28. Connection keep-alive
30. Cookie jsessionid=072d9b189c4aa9da4d4ad0b6c2c89e50
32. Cache-control max-age=0

In JSP, the default is to use the cache, if you do not want to use the JSP page can be added

Java code

1. <%
2. Response.setheader ("Pragma","No-cache");
3. Response.setheader ("Cache-control","No-cache");
4. Response.setdateheader ("Expires", 0);
5. %>

Note that this is only for pages that do not use caching, images, CSS, JS, or you can use the cached

If you want to control a type that does not use the cache, you can use the filter

Tomcat with Gzip and cache