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  1. #1
    Member
    Join Date
    Sep 2008
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    Basalt
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    14

    Max Frequency per Item question.

    We currently have the Allegro Edition of Lightstreamer and have a question on how the frequency limiting works.

    If we have an item and it receives say, four updates in under a second.
    Update 1 is to Field A
    Update 2 is to Field B
    Update 3 is Field A and C
    Update 4 is to Field D

    At the end of the second is a cumulative update sent (Most recent A, B, C, and D) or only the last update or first update after the tick?

    Thank you.

  2. #2
    Administrator
    Join Date
    Jul 2006
    Location
    Milan
    Posts
    988
    If you refer, in your examples, to partial updates
    (that is, updates in which the Data Adapter supplies, in the update event object, only the changed fields)
    then I confirm that "cumulative updates" are issued,
    provided that the item is subscribed to in MERGE or COMMAND mode.
    We assume that your case is MERGE mode.

    Note that, if no data had come for more than a second,
    then Update 1 would be sent and Update 2, 3, and 4 would be cumulated in a second update.
    Internal delays and buffer settings may also change the way updates are merged (but, of course, not the order).

 

 

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