Ajax How to set timeout (one action performed 2 times) _ajax related

Today in the test project found that an action performed 2 times, this operation takes approximately 5 minutes to complete, engineering environment apache2+tomcat6.0.

The online search found several places to set timeouts:

1.ajax syntax to set the unit millisecond, for example:

$.ajax ({ 
url:xxx, 
timeout:600000, 
type: ' POST ', 
data: { 
}, 
error:function () { 
Show_ Fail_meg ("Boot system failed!) "); 
} 
});

2.tomcat Configuration server.xml Unit milliseconds

Connector port= "8080" protocol= "http/1.1" connectiontimeout= "20000" redirectport= "8443" 
UTF-8 "/>

3.apache configuration file httpd.conf, unit seconds

# 
# timeout:the number of seconds before receives and sends time out. 
# 
Timeout 60

Modify the above several places, found still not effective, and finally positioned in the MOD_JK module,

MOD_JK abbreviation JK is an pluggable module of the Apache server that provides the ability to handle jsp/servlet for Apache or IIS servers.

That is, JK settings may overwrite the settings of Apache2 and Tomcat as well as Ajax.

The contents of JK's configuration file/etc/httpd/conf/workers.properties are as follows:

worker.master.socket_timeout=300

Sure enough to see this number is exactly 5 minutes, with the exception of the same phenomenon, after the reboot, normal!