location优先级

• location优先级

location优先级
location /img     # 直接匹配
      location /img {
            index index.html
      }
location = /img   # 精确匹配
      location = /img {
            index index.html
      }
location ^~ /img  # 前缀匹配
      location ^~ /img/ {
            index index.html
      }
location ~ /img     #区分大小写
location ~* /img    #不区分大小写
      location ~* .(gif|jpg|jpeg)$ {
            index index.html
      }
Let’s illustrate the above by an example:

location = / {
    [ configuration A ]
}

location / {
    [ configuration B ]
}

location /documents/ {
    [ configuration C ]
}

location ^~ /images/ {
    [ configuration D ]
}

location ~* .(gif|jpg|jpeg)$ {
    [ configuration E ]
}
= 高于 ^~ 高于 ~ 高于 ~*

The “/” request will match configuration A, the “/index.html” request will match configuration B, the “/documents/document.html” request will match configuration C, the “/images/1.gif” request will match configuration D, and the “/documents/1.jpg” request will match configuration E.

注意：
      优化等及相对于相同的匹配