[imp] Re: folder list caching in IMP 3.x

[liam hoekenga]

>> Are there any versions of IMP 3.x that support the folder list
>> caching that IMP 4.x supports?   We're not going to be upgrade to 
>> 4.x for a couple more months and we believe that generating the 
>> folder list w/ every page requestis driving load up on our proxy 
>> servers.
>
> No.  Although the folder caching code is entirely contained in
> imp/lib/Folder.php (grep for 'cache_folders') so it probably would not
> be too difficult to backport if you wanted to.

Ok.. so if IMP 3.x /doesn't/ support folder list caching, and /does/ 
regenerate
the folder list with each page request... what's this piece of code?

lib/Folder.php ~ ln 98
        // either get the list from the cache, or go to the IMAP
        // server to get it if we haven't gotten it yet.
        if (isset($list_cache[$signature])) {
            $mailboxes = $list_cache[$signature];
        } else {
        ....

Liam