Enable store logging for Wowza Streaming Engine Media Cache

Learn how to use logging to track available space in Media Cache stores. Media Cache is a built-in caching mechanism included with Wowza Streaming Engine™ media server software that increases the scalability of video-on-demand (VOD) streaming.

Note: Media Cache store logging is available in Wowza Streaming Engine 4.8.8.01 and later.

About Media Cache store logging


When Media Cache store logging is enabled, a message similar to the following is added to the wowzastreamingengine_access.log file each time a new item enters the store.

MediaCacheItemBase.getStoreItem[AWS S3] Item added to store: mediaName:amazons3/sample.mp4 length:58958409 store:{name:"default",fullness:0.55%,currSize:58961505,maxSize:10737418240,itemsInStore:1}

If the store is full or there isn't enough space left, the following message is displayed:

MediaCacheItemBase.getStoreItem[AWS S3] No room for item in store(s): mediaName:amazons3/sample.mp4 length:58958409

Enable store logging in Wowza Streaming Engine Manager


  1. In Wowza Streaming Engine Manager, click the Server tab, and then click Media Cache in the contents panel.
  2. On the Properties tab, click Custom in the Quick Links bar.
  3. In the Custom area, click Edit.
  4. Click Add Custom Property, specify the following settings in the Add Custom Property dialog box, and then click Add:
     
    • Path – Select /Root/MediaCache.
    • Name – Enter logStoreCapacityInterval.
    • Type – Select Integer.
    • Value – Enter a value, in milliseconds, to specify how often the store should be checked.
  5. Click Save, and then restart the server when prompted to apply the changes.

Enable store logging in XML


  1. Navigate to [install-dir]/conf/ and open MediaCache.xml in a text editor.
  2. Add the logStoreCapacityInterval property to the <MediaCache>/<Properties> container element.
    <Property>
      <Name>logStoreCapacityInterval</Name>
      <Value>10000</Value>
      <Type>Integer</Type>
    </Property>
    
  3. Restart Wowza Streaming Engine to apply the changes.

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