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Re: [milter-greylist] Re: is this a DoS?

2004-06-01 by Dan Hollis

On Tue, 1 Jun 2004 manu@... wrote:
> Jeff Wasilko <jeffw@...> wrote:
> > I guess this is one tradeoff of using an on-disk db (like BDB)
> > vs. trying to keep it in memory.
> Keeping everything in memory makes sense since you walk the whole
> greylist on each new spam that gets in.

I wonder if this won't cause scalability problems in the future on very 
large systems (eg 10,000's of users). Multiply by the unique senders and 
unique IPs...

> > As someone who's tried to do high-transaction rate stuff with
> > BDB, I understand your reluctance to use it. It's so easy to get
> > deadlocked with it...
> The biggest issue is that you have no data integrity garantee if the
> power goes down. My biggest concern being reliability, I prefer a text
> based dump because you can always fix things by hand if you need it.

Doesnt bdb have transactions? That would seem to solve the data integrity 
issue.

Another alternative would be sql.

-Dan

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