The difference between Nginx return rewrite and permanent redirection

Question

In the following article, several permanent redirection methods are given
I would like to ask why there is a difference between GOOD and BETTER in rewrite permanent and return 301
I personally think it may be a regular place Will there be any performance loss?

https://www.nginx.com/resources/wiki/sta...

Answer 1

I checked the information, probably because:

1. return has clearer semantics, "that's it", the result is 301.

2. As you said, the performance loss of regular matching; the difference between "BAD" and "GOOD" is also explained at the end of the article

nginx return vs rewrite