I'd like to punch a hole in the full page cache for the top menu of a site. While digging through some Enterprise code, I see that the top menu has an existing hole punched:
// app/code/coe/Enterprise/PageCache/etc/cache.xml <catalog_navigation> <block>page/html_topmenu</block> <name>catalog.topnav</name> <placeholder>TOPMENU</placeholder> <container>Enterprise_PageCache_Model_Container_Catalognavigation</container> <cache_lifetime>86400</cache_lifetime> </catalog_navigation>
However, I'd like to change the cache_lifetime to be much shorter (1 second). What is the best way to modify the cache_lifetime without modifying core code?