• Subject: Sv: data queues
  • From: "Henrik Krebs" <Henrik.Krebs@xxxxxxxxx>
  • Date: Sun, 24 May 1998 23:54:44 +0200

At 04:24 PM 1/22/98 +0200, Juris wrote:
>I would be grateful if somebody would give a brief summary on data
>queues, their usage, application and etc.
>
>Thanks.
>
>Juris.

Primary intention is asyncronious job to job communication.

Another explanation - if you feel comfortable with messageques:
Dataqueues are the same as messageques, only different.


1. They can have a hanging 'msg-wait' from more than one job at the same time 
(dataqueues only one). Example: You can
split the processing of the data into more identical jobs)
2. The processing of entries can be only sequential (arrival, LIFO or indexed). 
Example: Use the index to indicate
priority or I/O-optimize by processing same keys right after each-other
3. You can only recieve (and remove) one at a time - not 'browse' through them 
all. This is true if you forget the
'non-authorized- TAATOOL/DSPDTAQ.
4. The dataqueue API's run in mch-pool



Regards

Henrik Krebs

------------------------------------------------------------
Henrik Krebs
IT Consultant (IBM AS/400)
Phone +45 31 57 83 23
Mobile +45 40 88 83 23
Email: Henrik.Krebs@Scout.Net
Web: http://users.cybercity.dk/~dko3534
Snailmail: Amagerbrogade 62, 3-24, DK-2300 Copenhagen
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