Per this Facebook blog on Dec 21 2007, http://blog.facebook.com/blog.php?blog_id=company&blogger=1014953
Quote: Fortunately MySQL is open source software, meaning we can actually change the way it works by modifying the code. We did just that-embedding extra information in to the MySQL replication stream that allows us to properly update memcached in Virginia. This ensures that the cache and the database are always in sync. Was this code change released by Facebook ? We have exactly such a need for this type of setup. Thanks, Gabriel Laden
