"Expires" parameter in /ssf/WEB-INF/web.xml - english

I noticed an expiration parameter in the novell / teaming / apache-tomcat / webapps / ssf / WEB-INF / web.xml file

Appeared 3 times in the file, I am confused about its use.

follow the appearances of the file.

Does it have any significant influence on the system?

<filter> <filter-name>publicResourcesFilter</filter-name> <filter-class>org.kablink.teaming.asmodule.servlet.filter.ResponseHeaderFilter</filter-class> <init-param> <param-name>Cache-Control</param-name> <param-value>public, max-age=31536000, no-check</param-value> </init-param> <init-param> <param-name>Expires</param-name> <param-value>Wed, 01 Jan 2020 00:00:00 GMT</param-value> </init-param> <init-param> <param-name>X-UA-Compatible</param-name> <param-value>IE=Edge</param-value> </init-param> </filter>

 

<filter> <filter-name>privateResourcesFilter</filter-name> <filter-class>org.kablink.teaming.asmodule.servlet.filter.ResponseHeaderFilter</filter-class> <init-param> <param-name>Cache-Control</param-name> <param-value>no-cache</param-value> </init-param> <init-param> <param-name>X-Content-Type-Options</param-name> <param-value>nosniff</param-value> </init-param> <init-param> <param-name>Expires</param-name> <param-value>Thu, 01 Jan 1970 00:00:00 GMT</param-value> </init-param> <init-param> <param-name>X-UA-Compatible</param-name> <param-value>IE=Edge</param-value> </init-param> </filter>

 

<filter> <filter-name>privateCachedResourcesFilter</filter-name> <filter-class>org.kablink.teaming.asmodule.servlet.filter.ResponseHeaderFilter</filter-class> <init-param> <param-name>Cache-Control</param-name> <param-value>private, max-age=31536000, no-check</param-value> </init-param> <init-param> <param-name>X-Content-Type-Options</param-name> <param-value>nosniff</param-value> </init-param> <init-param> <param-name>Expires</param-name> <param-value>Wed, 01 Jan 2020 00:00:00 GMT</param-value> </init-param> <init-param> <param-name>X-UA-Compatible</param-name> <param-value>IE=Edge</param-value> </init-param> </filter>

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