We use multiple models here because we do full development. What we deploy on MySQL is from the Helm chart or it's a Dockerized deployment of MySQL. So we're using the Helm stable chart right now. That's sort of the easiest way to deploy it - to say just one command and it bootstraps your whole database within your classical means or cluster. You can do it locally with mini-crews or developers, for organizational use, or Kubernetes. It's single-node Kubernetes.
Also, you can just deploy MySQL locally with a Helm chart. Regarding production, we have a kind of automated process which is similar to what Spinnaker deploys, with a Helm chart as well as within the cluster. Some other solutions we don't run within the cluster, we use the Cloud version of the database which is Cloud SQL, Google Cloud, and AWS. Those are fully managed ones, of which there are two versions. We have our self-managed version which we run locally and with our DEV cluster and then there is production, as well.
We also use a self-managed version since every cloud provider offers MySQL, even AWS. It depends on the client's needs, how flexible the client is, and also how comfortable they are with MySQL.
We either go with our managed version or the Cloud version. Both are supported because today the Mica server that's actually accessing the database or the piece of software just needs a connection string, it doesn't care if it's running within the Synchronous Cloud. If it's running somewhere else in the Cloud, it's still a private connection on the same network.
So the only differences here are in terms of money costs and whether it's managed or not managed. So for local development, you don't want to have a managed database in the Cloud. You don't need to be tethered to the Cloud, you'd rather just deploy locally. And because we have the same deployment scripts that run locally in DEV and testing, we use the same Helm chart and the same Docker version with MySQL to distribute that through our DEV environment to test the bills and run the test and there is a full QA environment for teaching, as well.