2.4.x patch: trunk patch works (minus CHANGES)
+1: minfrin
+ * mod_cache_socache: New cache implementation backed by mod_socache
+ that replaces mod_mem_cache removed from httpd v2.2.
+ trunk patches: http://svn.apache.org/r1305167
+ http://svn.apache.org/r1330964
+ http://svn.apache.org/r1388660
+ http://svn.apache.org/r1388899
+ http://svn.apache.org/r1391396
+ http://svn.apache.org/r1391398
+ http://svn.apache.org/r1392214
+ http://svn.apache.org/r1406760
+ http://svn.apache.org/r1418648
+ 2.4.x patch: http://people.apache.org/~minfrin/httpd-mod_cache_socache-rollup.patch
+ +1: minfrin
+
A list of further possible backports can be found at:
http://people.apache.org/~rjung/patches/possible-backports-httpd-trunk-2_4.txt