Detailed explanation of Nginx Location configuration (Location matching order)

Location means "positioning", which is mainly based on Uri for different positioning. It is essential in the configuration of virtual hosts.

Location can locate different parts of the website to different processing methods.

1. Basic syntax of location

location [=|~|~*|^~] patt {

}

=: Strict match. If the query matches, the search stops and the request is processed immediately.
~: for case-sensitive matching (regular expressions can be used).
~*: for case-insensitive matching (regular expressions can be used).
^~: If you use this prefix with a regular string, it tells nginx not to test the regular expression if the path matches.

2. How location works

3. Simple examples prove the conclusions of the above pictures

Matching process without regular expressions

location = / {
   root /var/www/html/;
   index index.htm index.html;
}

location / {
   root /usr/local/nginx/html;
   index index.html index.htm;
}

The location configuration is as above. If you visit http://xxx.com/, the positioning process is:
1: Exact match hits "/", and the index page is index.htm, so the requested address becomes http://xxx.com/index.htm
2: Match "/index.htm" again. This time the internal redirect URI is already "/index.htm", and the normal match "/" is hit. The root directory is /usr/local/nginx/html
3: The final result is to visit /usr/local/nginx/html/index.htm

Matching process with regular expressions

location / {
  root /usr/local/nginx/html;
  index index.html index.htm;
}

location ~ image {
  root /var/www/;
  index index.html;
}

If we visit http://xx.com/image/logo.png. At this time, the uri is "/image/logo.png", which matches the common match "/" and the regular match "~ image". However, according to the matching process analysis in the above picture, the regular match is finally effective.

So the final access address is: /var/www/image/logo.png. If you want the final matching path to be /var/www/logo.png, you can change the "root /var/www/" in the regular expression to "alias /var/www/"

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.