disable ram cache while when get http error codes

I know this is digging up a really old post, but one caveat on hoolio's second recommendation:

If you wanted to enable caching only for 200, 301, 302, etc responses, you could flip the CACHE::enable/disable statements:

> when HTTP_REQUEST {
> 
>    set uri [HTTP::uri]
> 
>    if { [ class match [HTTP::path] starts_with cache_obj] } {
> 
>       CACHE::enable
>       log local0. "Caching [HTTP::path]"
> 
>    } else {
> 
>       log local0. "NON Caching [HTTP::path]"
>       CACHE::disable
>    }
> }
> when HTTP_RESPONSE {
> 
>     Check the response status code
>    switch [HTTP::status] {
> 
>       200 -
>       301 -
>       302 {
>          CACHE::enable
>          log local0. "Enabled cache for [HTTP::status] response to $uri"
>       }
>       default {
>          CACHE::disable
>          log local0. "Disabled cache for [HTTP::status] response to $uri"
>       }
>    }
> }

Without 304 in the 'CACHE::enable' half of the switch statement in the HTTP_RESPONSE event, RAMCache doesn't properly catch responses from the originating web server on checks for expired objects (at least on 10.2.4 HF3).