High Availability

In this post we will deploy MS Sql Server in a kubernetes cluster. We will then configure it as an always on availability group.We will also look at synchronization and failover.

Circuit breakers help to avoid one failing component tearing down other dependent services in a domino effect. The key idea is for a service to fail fast if a dependent resource is not available, as opposed to waiting for a timeout/error for each service invocation during the period in which the dependent resource is down.