Re: Listen / Notify - what to do when the queue is full

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От Jeff Davis
Тема Re: Listen / Notify - what to do when the queue is full
Дата
Msg-id 1265761835.17112.47.camel@monkey-cat.sm.truviso.com
обсуждение исходный текст
Ответ на Re: Listen / Notify - what to do when the queue is full  (Andrew Chernow <ac@esilo.com>)
Ответы Re: Listen / Notify - what to do when the queue is full  (Andrew Dunstan <andrew@dunslane.net>)
Список pgsql-hackers
On Tue, 2010-02-09 at 19:02 -0500, Andrew Chernow wrote:
> Wouldn't binary payloads be an alternative?  NOTE: I may have missed this 
> discussion.  Sorry if it has already been covered.

The Notify struct has a "char *" field, which can't hold embedded NULL
bytes, so it can't really be binary. But it can't be arbitrary text,
because it has to be encoded in a way that works for every possible
client encoding (otherwise there's a possibility of an error, and no way
to handle it).

Also, the query starts out as text, so we need a way to interpret the
text in an encoding-independent way.

So, I think ASCII is the natural choice here.

Regards,Jeff Davis



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