nginx_location

Nginx location configuration syntax
     . 1 . LOCATION [= | ~ | ~ * | ^ ~ ] URI {...}
     2 . {...} LOCATION the @name     
LOCATION configuration can have two possible configurations 
1. prefix + uri (string / regular expression)
 2 . @ + name 
prefix meaning
     =   : an exact match ( must be all equal )
     ~   : case sensitive
     ~ * : ignore case
     ^ ~ : simply match the uri section 
     @: internal services Jump 
uri: uniform resource identifier (English: uniform resource identifier, abbreviated: URI ) string in computer terms is a name that identifies a particular Internet resources in 
the most common form of URI is the uniform resource locator (URL), often designated as informal URL


 Location basics 1 .location is configured in the server block. 

2You may be used in different configurations (location configuration) Depending on the URI, to handle different requests. 
URL: Uniform Resource Locator System (Uniform Resource Locator; the URL ) is a representation of the information for specifying the location on the Internet web service program

 . 3 .location is in order, will be the first location matching process. 
Location Configuration Demo 

. 1 . = , Matches exactly LOCATION = / {#} Rule 
# matched to the HTTP `: // www.example.com /` such a request.  

2 ~ , case sensitive LOCATION ~ / Example / {#} Rule 
# sample request #http: // www.example.com/Example/ [Success] 
 #http: // www.example.com/example/ [Failed ]  

3 ~ * , ignore case LOCATION ~ * / Example / {#} rule 
# is ignored case portion #http uri: //www.example.com/Example/ [Success] 
 #http: // www.example.com/example/ [Success]  

4 . ^ ~ , beginning only matches uri LOCATION ^ ~ / IMG / {rules} # 
# in / img / requests beginning, #http the match will be: // www.example.com/img/a.jpg [success] 
 #http: // www.example.com/img/b.mp4 [success]  

5 @. internal nginx jump LOCATION / img / {error_page 404 @img_err; @img_err LOCATION} {#} rule 
# to request / img / beginning, if the link status is 404 . It will be matched to the @img_err this rule.
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