2.2.x Patch: trunk patch works
+1: sf, minfrin
+ * mod_cache: Introduce the thundering herd lock, a mechanism to keep
+ the flood of requests at bay that strike a backend webserver as
+ a cached entity goes stale.
+ Trunk Patch: http://svn.apache.org/viewvc?rev=808212&view=rev
+ http://svn.apache.org/viewvc?rev=808220&view=rev
+ http://svn.apache.org/viewvc?rev=808649&view=rev
+ http://svn.apache.org/viewvc?rev=808652&view=rev
+ http://svn.apache.org/viewvc?rev=808656&view=rev
+ http://svn.apache.org/viewvc?rev=809440&view=rev
+ http://svn.apache.org/viewvc?rev=809665&view=rev
+ 2.2.x Patch: http://people.apache.org/~minfrin/httpd-cache-thundering.patch
+ +1: minfrin
+
PATCHES/ISSUES THAT ARE STALLED
* srclib/pcre and vendor/pcre