This article describes how to use the Wowza™ Media Cache read-through caching mechanism to cache DVR chunks on edge servers in a multi-server configuration of Wowza Streaming Engine™ media server software.
Set up a Wowza Streaming Engine live stream repeater configuration to stream DVR from origin to edge(s)by following the instructions in Set up a Wowza Streaming Engine live stream repeater for Wowza nDVR.
Enable nDVR media caching
On each edge server, do the following:
- In Wowza Streaming Engine Manager, click the Applications tab and select your dvredge application in the contents panel.
- In the contents panel, click nDVR.
- If nDVR isn't enabled, in the details page, click Enable nDVR, and then restart the application when prompted to enable the feature.
- Your dvredge application is configured to use nDVR if a green checkmark is displayed next to the Use Media Cache option in the details page. If a red checkmark is displayed next to this option, click Edit, select the Use Media Cache checkbox, and then click Save. Restart the application when prompted to apply this change.
Manage nDVR media caching
For nDVR workflows, you must use the default Media Cache source named dvrorigin. In Wowza Streaming Engine, dvrorigin is automatically installed and available for use.
For most deployments, the default settings for DVR chunk caching should be adequate. For more information about the property values, see the Media Cache User's Guide for Wowza Streaming Engine.