Last week, Glenn Eguchi, Andrew Wallace and I presented at the Adobe Media Server user group meeting an overview on how to setup a fault tolerant origin server and live playback environment with both HDS / HLS, redundant packagers, Varnish as reverse proxy, and techniques like Best Effort Fetch with Liveness and Dropout and the Control Plane.
Besides Glenn’s white paper, it’s probably the best resource to fully understand setting up your own Adobe Media Server origin.