Any negative impacts when using Mod-Rewrite?

Question

I know there are a lot of positive things mod-rewrite accomplishes. But are there any negative? Obviously if you have poorly written rules your going to have problems. But

Answer 1

If you're worried about apache's performance, one thing to consider if you have a lot of rewrite rules is to use the "skip" flag. It is a way to skip matching on rules. So, whatever overhead would have been spent on matching is saved.

Be careful though, I was on a project which utilized the "skip" flag a lot, and it made maintenance painful, since it depends on the order in which things are written in the file.