Auto-provisioning and auto-scalability are the killer features of Function-as-a-Service cloud offerings, and Azure Functions in particular.

One drawback of such dynamic provisioning is a phenomenon called “Cold Start”. Basically, applications that haven’t been used for a while take longer to startup and to handle the first request.

Azure SQL Database is a managed service that provides low-maintenance SQL Server instances in the cloud. You don’t have to run and update VMs, or even take backups and setup failover clusters. Microsoft will do administration for you, you just pay an hourly fee.

In my previous post about Event Store read complexity I described how the growth of reads from the event database might be quadratic in respect to amount of events per aggregate.