[wp-hackers] Memcached backend for the Object Cache

[Phillip Pearson]

John Joseph Bachir wrote:

> On Tue, 20 Dec 2005, Phillip Pearson wrote:
>
>> One problem - memcached has no security.  So if you give a bunch of 
>> users access to a single memcached instance, anyone will be able to 
>> overwrite anyone else's data.  Unless someone makes memcached 
>> multi-user-aware, it probably won't be useful to shared hosts running 
>> lots of WP installs.  (Still great for wordpress.com, WPMU etc, though.)
>
> I am no memcached expert, but I wonder if there is much overhead 
> involved in running a separate memcached dameon for each user? then 
> they could be divied up by port... or permissions could be handled via 
> dns and some other layer... food for thought.

That would be secure, but the problem is that this would require 
reserving a fixed amount of memory for each user, I think.  Ideally 
you'd want the most commonly accessed objects over the whole server 
being cached rather than the most comment objects for each particular user.

Cheers,
Phil