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Stephan Kulow wrote:
>Am Donnerstag, 7. Dezember 2006 18:51 schrieb Thiago Macieira:
>> If the server doesn't support connection keep-alive, you should fix
>> it.
>
>Isn't fixing the web _and_ your DNS servers asked a bit too much?
>
>What is so problematic about implementing a DNS cache within KDE
>if it turns out to be a problem for soo many people setting up one
> correctly?

Like I said, this was a very corner case: a webpage with 180 items on it,=20
coupled with the absence of connection keep-alive, multiple webservers=20
(including ads and that kind of stuff) and a slow DNS server.

No wonder it was slow.

I will not implement a global DNS cache on KDE because there already is a=20
program that does that and for the whole system: nscd. Just install it.=20
There is no need to import the nscd code into kded.

That said, one of the ideas I had for KDE 4 was to be a global connection=20
broker for KIO. That would avoid round-robin DNS errors. IIRC, the=20
original bug report that led to that idea was a hostname for an FTP=20
server that led to two different servers, which had slightly different=20
layouts. Sometimes downloads would work, sometimes they unpredictably=20
wouldn't, because KIO would reconnect and end up at the wrong server.

The solution was to have all lookups go through a centralised daemon=20
(kded) and the results -- IPs -- be shared among the ioslaves in a very=20
specific and controlled order.

=2D-=20
=A0 Thiago Macieira =A0- =A0thiago (AT) macieira.info - thiago (AT) kde.org
=A0 =A0 PGP/GPG: 0x6EF45358; fingerprint:
=A0 =A0 E067 918B B660 DBD1 105C =A0966C 33F5 F005 6EF4 5358

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