Scaling PHP in the Cloud

Would this be a worthwhile alternative to Memcache, or Key-Value Storage engines like Redis & Riak?

Outline

http://blogs.innodb.com/wp/2011/04/nosql-to-innodb-with-memcached/

Quoted from above : This offering provides users with the best of both worlds – maintain all of the advantages of rich SQL query language, while providing better performance for simple queries via direct access to shared data.

This is a technology preview, and that means it isn’t ready for production deployments (yet...) However, I think this warrants a discussion as the advantages of this seem too good to give it a miss.

1. No additional cache management server is required.
2. No duplicate cache.
3. ...

EDIT: use Markdown syntax