[users@httpd] processCallbacks status 2

Hi All, We are using have Apache and Tomcat server connected using mod proxy. Following message is printed in Tomcat logs WARNING: processCallbacks status 2 Can you please suggest the issue and impact of this. Thanks Sandeep

[users@httpd] mod expiry with proxy | Help required

headers for all content residing in Apache. However we were unable to configure expiry headers for content (like images) coming via proxy (Tomcat). Appreciate your help. Sandeep Kumar Kalpane Senior Associate Platform L1 | SapientNitro Salarpuria GR Tech Park 6th Floor, VAYU Block #137 Whitefield