In my previous blog post, Consuming External Web Services, I described how external services can be consumed by in-mesh Istio applications via HTTPS. In this post, I demonstrate consuming external services over TCP. You will use the Istio Bookinfo sample application, the version in which the book ratings data is persisted in a MySQL database. You deploy this database outside the cluster and configure the ratings microservice to use it. You define a Service Entry to allow the in-mesh applicati...
