Listen/Notify in 9.0

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От Kaare Rasmussen
Тема Listen/Notify in 9.0
Дата
Msg-id 201007091607.06904.kaare@jasonic.dk
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Ответы Re: Listen/Notify in 9.0  (Tom Lane <tgl@sss.pgh.pa.us>)
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Hi

As I understand the changes to the notification system in 9.0, apart from 
being able to carry a payload, it will guarantee the order of delivery, and 
also it will keep the notification and notify any listener, even if the 
listener didn't register at the time of notification. Is this correct?

What happens if the listener process dies, for how long time will it take up 
ressources?
What happens if the listener process never picks up the notification, same 
question?
What happens if the same process makes the same LISTEN request again. Will it 
take up more ressources?

-- 

Med venlig hilsen
Kaare Rasmussen, Jasonic

Jasonic                 Telefon: +45 3816 2582
Nordre Fasanvej 12
2000 Frederiksberg      Email: kaare@jasonic.dk



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