NGINX Add or Remove "/" from URLs

1. Add

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rewrite ^(.*[^/])$ $1/ permanent;

Possible problems: Adding / to static resources such as pictures results in 404

Solution: change to

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if ($uri !~ ".*\.(gif|jpg|jpeg|png|bmp|swf|js|css)") {
     rewrite ^(.*[^/])$ $1/ permanent;
}

Possible problems:

Conflicts with other pseudo-static rules, causing redirection to /index.php/...

There is no solution at present, you can try to modify the position where this line of code is placed.

2. Remove

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rewrite ^/(.*)/$ /$1 permanent;

3. Precautions

NGINX will add slashes by default, generally do not change them randomly.

Possible application scenarios:

The program supports both with and without slashes, for example:

/thread/1
/thread/1/

Both can be accessed, then there is a high probability that search engines will index both, resulting in decentralization.

Well, it's best to redirect one of the 301s to the default one.

Finally, be careful not to use

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location {
     ...
}

Bracketing may lead to failure, which is related to the priority of NGINX pseudo-static rules, so I won’t go into details here.

refer to

Nginx Rewrite Rules Guide
http://www.ttlsa.com/nginx/nginx-rewriting-rules-guide/