Just to add my two cents here.<p>I've been using cloud SQL now through the weekend for a private alpha product that receives under 20,000 requests per day right now.<p>Im currently running this in conjunction with GKE and I have to say it's really solid. The sql proxy setup was very simple, very easy, and overall a great experience.<p>I'm looking forward to replication and support for PostGIS extensions, which I hope will come over the next five to six months. Best of luck to the Cloud SQL team.<p>Let me know if anyone has some questions.
To add to the "Security" section: Google's cloud SQL offerings run over the public network. With Google Cloud MySQL, you must whitelist IPs or configure strong authentication and TLS to stay protected, even if connecting from VMs in the same project. The is no "vpc"-like option.
Not sure if the author is limited by his trial account but to get more than 6.5GB of memory you need to dial up the number of cores which then gives you up to 64 cores and 416 GB memory