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  1. #1
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    Jul 2009
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    Maximum size of updates and messages?

    A few related questions:
    * Is there a maximum size of item updates that can be sent from Lightstreamer to the browser?
    * Is there a maximum size of messages that can be sent to LS using engine.sendMessage?
    * Are either of these limits different when you have multiple windows sharing the same engine?

    I'm curious, because I'm not sure how LS shares its engine between multiple browser windows. If it's done by setting cookies, then there may be a size limit imposed by some browsers. But I haven't seen anything about this in the documentation.

    Thanks,
    Jacob

  2. #2
    Administrator
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    Jul 2006
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    Milan
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    Though Lightstreamer was conceived for the handling of small updates,
    updates on the order of the MB are handled successfully on some existing applications using thick clients.
    On web browsers, we expect that browser limitations may affect the processing of very huge updates; however
    • there are no constraints related to limitations on cookie management
    • no further constraint is applied when sharing the engine

    The same holds for sendMessage.

    Note that the <content_length> settings in the Server configuration file should be far greater than the expected update length (but, in case of conflicts, the update takes the precedence).

    Similarly, note that the <request_limit> protection setting in the Server configuration file should be far greater than the expected client message length; in this case the Server setting takes the precedence.

    Note that updates and messages are sent in encoded form and this may increase their length, depending on the contents.

  3. #3
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    Thanks -- that's very helpful!

 

 

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