http://archives.postgresql.org/pgsql-hackers/2004-01/msg00861.php
(Just to dredge up another old thread...)
While its true that a post-commit operation cannot modify a database, it
might still for instance propagate the outcome of the transaction to another
resource outside of the database, it might invalidate a transaction local
in-memory cache, or it might clear resources occupied in memory for a rule
system, etc.
This is exactly what I'd like to do. Is there a way to do it nowadays?
What I'm going for is an AJAX app that doesn't need to poll the
server, but rather can have the server callback to it when a transaction
messes with the data a user at which a user is looking.
Any advice would be much appreciated.
Thanks,
Kev
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