store_headers in memcache and diskcache

[Dirk-Willem van Gulik]

Caching experts --  why do memcache and diskcache have seemingly quite  
different caching strategies when it comes to storing the headers ?  
E.g. the cache_object_t * is populated with the status/date/etc data  
in memcache - but not in disk-cache. Is this work in progress or  
subtle design ?

I am trying to understand (got  a working mod_memcached_cache.c* --  
and cannot quite get the right VARY behaviour).

Thanks,

Dw.

*: using apr_memcache and a bit more generalized glue as to reduce the  
overlap with the mod_ssl memcache backend. As to then be able to layer  
in (lib)ketama (robust hashing) and ultimately plug-able cache  
invalidation.