Here's a few experimental additions I made to conf/web.xml to aggressively target what files have packet header caching parms set by Tomcat <filter-mapping> <filter-name>ResponseHeaderFilter</filter-name> <url-pattern>/ui/mmi/tools/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>ResponseHeaderFilter</filter-name> <url-pattern>/ui/mmi/config/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>ResponseHeaderFilter</filter-name> <url-pattern>/ui/mmi/bundle/*</url-pattern> </filter-mapping> The filter mapping addition for /bundle/ only works iff "options.cache=true" is set in CSpaceInfusions.js. This change isn't approved yet but it _appears_ to work as expected, which is to allow ajax caching of the html template files in the UI bundle directory. So, caveat emptor if you choose to use this. Once implemented I can measure some improvement in page load metrics. For instance, createnew now only makes two calls: a get to loginstatus and a post to composite. The page loads in about 320ms (maybe slightly faster, hard to tell) and transfers roughly 2kb instead of 64kb without the filter-mapping additions. Page load speeds may not differ much from before and after but less files to transfer means less chances for delay. (And less bandwidth used!) - Jesse