Nginx proxy_pass URL end with and without slash / difference

In nginxthe configuration of proxy_passthe agent forwards:

• In proxy_passthe back of the urlincrease /, in absolute root path.
• In proxy_passthe latter urlwithout /indicating relative paths, path matching portion will also go to the proxy.

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Assuming that access address is:http://localhost:8081/test/abc.html

• Plus /:

  location /test/ {
  	proxy_pass http://127.0.0.1:8081/;
  }
  

  Actual visit url:http://127.0.0.1:8081/abc.html

• Without /:

  location /test/ {
  	proxy_pass http://127.0.0.1:8081;
  }
  

  Actual visit url:http://127.0.0.1:8081/test/abc.html