Friday, November 5, 2010

Re: Ensuring uniqueness on application level

First off.. if the DB connection sometimes (aka too often) breaks,
then find a better host else it will give you lots more headache in
the future. It is crucial to have the best server environment you can
possibly get. I don't think isUnique will be of any use when your DB
connection breaks.

An other option is to add another database. If one isn't reachable,
then the other takes over. A failover database.

An other option is to cache all the unique values eg every time it
gets updated. If there is no DB connection, then check the cached file
to see if the name in it exists. If it doesn't, then let the user
choose the name and continue register.

On Nov 5, 9:23 am, Éber <eber.frei...@gmail.com> wrote:
> Hey guys!
>
> I'm having a little bit of trouble with validation on my models. That
> is because I'm using isUnique on some fields, but I didn't defined the
> fields as unique keys on the DB (I'm using MySQL). I can't make them
> unique keys right now because I'm using soft deletion on these models.
>
> The thing is that, sometimes the DB connection will break, and
> isUnique won't return a valid value, making it possible for my users
> to register things with the same name, which is causing a lot of
> trouble for me. I was trying to think in a way to ensure that, even
> when the DB fails, I get some sort of good value from isUnique, so the
> user won't be able to register with a duplicated name...
>
> Does anyone have any hints on how can I do this the best way possible?
>
> Thanks!

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