> > For each page hit, I do this:
> >
> > update pagecounts set counter = counter + 1 where pagename =
> 'testpag.php'
> >
> > Do I have to set a particular isolation level? Or does this not work in
> > general?
>
> In read committed level, if the second update launches before the first
> update is finished (commits), then both of these updates will operate on
> the old counter value. That is, you miss one page hit.
can you break it into this:
begin;
select counter from pagecounts where pagename='testpag.php' for update;
update pagecounts set counter=counter+1 where pagename='testpag.php';
commit;
Chris
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