On Fri, August 26, 2005 2:53 am, Jasper Bryant-Greene wrote: > Adrian Cid Almaguer wrote: >> You can find the IP and find with it the name. > > Certainly, you can. But do you realise what sort of slowdown doing a > DNS > lookup for (I am assuming here) every request would cause? Better to > store the IPs and run some sort of tool on the logs later to get the > names, maybe at a time when there's hardly any load on the server
Not only when there's a lower load on the server, but also... A) On a different machine entirely, dedicated to DNS lookups B) Using a tool that caches DNS results, so it doesn't lookup the same IP address 1,000 times DNS lookups usually (by default) take 30 seconds to time-out. You really don't want every page on your site to take 30 seconds to find out that some dial-up user has no domain name for their IP address because there simply is no domain name for that IP. -- Like Music? http://l-i-e.com/artists.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
