New storage object now exists in PHP Memory Cacher: Memcache
APC is approximately 14 time faster than Memcache, but Memcache can be used more universally, and is more flexible.
For example, Memcache can be used with mod_php and php-cli (from cron) or other applications.
So, APC is still main recommended cache storage.
Both Memcache and Memcached PECL extensions for PHP can be used.
And I think English is common language, so I'm going to write future posts in English.