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Thread: How Wowza Engine Server cache Chunks on RAM

  1. #1

    Default How Wowza Engine Server cache Chunks on RAM

    Hi everyone,

    I know that with Live Stream Application, Wowza Engine server cache some chunks on RAM, with the number is "MaxChunkCount".

    How about VoD Application ?
    Does it cache VoD chunks on RAM?
    If Wowza Engine Server cache VoD chunks on RAM and two user request for a same VoD concurrently, does they use the same RAM location?

    Thank you.

  2. #2
    Join Date
    Sep 2011
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    1,931

    Default

    Hi,
    Wowza only hold chunks for HTTP clients in memory for live streams.
    You may have noticed in the packetization articles, there is no option to change MaxChunkCount for video on demand.

    Jason

  3. #3

    Default

    Hi JasonH,

    Does it mean everytime user request for a VoD content, the Wowza Engine Server access to storage to get the content?
    Because my Wowza Server cache VoD on SAN. I use iSCSI to connect my Wowza Engine Server to SSD Storage on SAN.
    Using Caching to save Bandwidth is still efficient, isn't it?

    Thank you.

  4. #4
    Join Date
    Sep 2011
    Posts
    1,931

    Default

    Hi,
    Does it mean everytime user request for a VoD content, the Wowza Engine Server access to storage to get the content?
    Yes, when using a standard VOD application it will read the file from the content directory for each client as required.
    Because my Wowza Server cache VoD on SAN. I use iSCSI to connect my Wowza Engine Server to SSD Storage on SAN.
    Using Caching to save Bandwidth is still efficient, isn't it?
    If caching local to the destination then yes it should be more efficient than fetching it from the source if it lives across the wire.

    Jason

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