mod_rewrite performance issue

I currently have a .htaccess file setup with this :

RewriteEngine on
RewriteRule ^([^/\.]+)/?$ index.php?id=$1

and im trying something out using this

RewriteEngine on
RewriteRule ^([^/]+)/([^\.]+) index.php?id=$2&cat=$1

but using the new setting there is a noticeable load time difference on pages 1 or 2 seconds.

Have i set up something wrong?

Thanks.

anyone?

There would be a slight performance decrease simply because the regex is capturing two segments as opposed to one. However I really don't see anything that would cause 1 - 2 seconds of increased page load time. There are a couple of suggestions to the regex you have though:

RewriteEngine on
RewriteRule ^([^/]+)/([^/.]+)$ index.php?id=$2&cat=$1

Added a string ending anchor

Removed the preceding backslash to the dot (the dot is not a meta character inside of a character class).

Have you changed anything else before noticing the performance decrease?

Is your .htaccess file located in the root directory?

no thats the only thing I changed, I tested it agaist both and the second version did seem to slow down.

its not in the root directory, its in a directory called products, what this make a difference?

Thanks.

Just tried out your modification and it works great, thanks again for the help. Learning alot these last few days.