nginx 위치란 무엇입니까?

修饰符(modifier)         
location [ = | ~ | ~* | ^~ ]     uri     { ... } 
location根据不同的修饰符可以分为两大类
前缀location(prefix location): 
无修饰符的普通location
带=的精准匹配location
带^~的非正则表达式location
正则表达式location(regular expressions location):
~    区分大小写的正则location
~*   不区分大小写的正则location

ocation = / { [ configuration A ] }                     #用户请求"/"时，匹配A，例如：www.pcm.com/
location / { [ configuration B ] }                       #当用户请求"/index.html"时，匹配B，例如：www.pcm.com/index.html
location /documents/ { [ configuration C ] }             #当用户请求"/documents/"时，匹配C，例如：www.pcm.com/documents/index.html      
location ^~ /images/ { [ configuration D ] }             #当用户请求"/images/"时，匹配D，：www.pcm.com/images/1.jpg 
location ~* \.(gif|jpg|jpeg)$ { [ configuration E ] }    #当用户请求".gif|.jpg|.jpeg"时，匹配E，例如:www.pcm.com/documents/1.jpg
                                                         #上面的反斜杠是转义字符，$的意思是结尾

location / {
    [ configuration B ]
}

location /documents/ {
    [ configuration C ]
}

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

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

请求URI                        执行的规则
/                             A
/index.html                   B
/documents/document.html      C
/images/1.gif                 D
/documents/1.jpg              E