Nginx Location Rule Precedence Comparison

The matching rules that may be involved in Nginx location are
= Exact match
^~ common character matching, case sensitive
~ Regular match, case sensitive
/xxx/yyy.zzz Maximum Match
/
The Nginx version used in this article is
[Root@node1 nginx]# Nginx-v
Nginx version:nginx/1.4.3
Experimental machine IP 192.168.151.70, browser for IE8, do not save cookies. The above five matching rule 22 were tested in sequence.
1. = Contrast ^~
Location ^~/images {
Rewrite ^/images http://www.baidu.com permanent;
}

Location =/images {
Rewrite/images http://www.sina.com.cn Permanent;
}
Results
[Root@agent3 tmp]# wget http://192.168.151.70/images
--12:05:53--http://192.168.151.70/images
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:05:53--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.194, 61.172.201.195
Connecting to www.sina.com.cn|61.172.201.194|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690283 (674K) [text/html]
Saving to: ' index.html '

100%[========================================================================&GT] 690,283--.-K/s in 0.08s

12:05:54 (8.45 mb/s)-' index.html ' saved [690283/690283]
= Priority greater than ^~

2. = Contrast ~
Location ~/images {
Rewrite ^/images http://www.baidu.com permanent;
}

Location =/images {
Rewrite/images http://www.sina.com.cn Permanent;
}
Results
[Root@agent3 tmp]# wget http://192.168.151.70/images
--12:05:53--http://192.168.151.70/images
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:05:53--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.194, 61.172.201.195
Connecting to www.sina.com.cn|61.172.201.194|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690283 (674K) [text/html]
Saving to: ' index.html '

100%[========================================================================&GT] 690,283--.-K/s in 0.08s

12:05:54 (8.45 mb/s)-' index.html ' saved [690283/690283]
= priority is greater than ~

3. = Contrast/xxx/yyy.zzz
location/images/images.jsp {
Rewrite ^/images http://www.baidu.com permanent;
}

Location =/images {
Rewrite/images http://www.sina.com.cn Permanent;
}
Results:
[Root@agent3 tmp]# wget http://192.168.151.70/images/images.jsp
--12:10:58--http://192.168.151.70/images/images.jsp
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:10:58--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.194, 61.172.201.195
Connecting to www.sina.com.cn|61.172.201.194|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690375 (674K) [text/html]
Saving to: ' INDEX.HTML.1 '

100%[========================================================================&GT] 690,375--.-K/s in 0.08s

12:10:58 (8.55 MB/s)-' index.html.1 ' saved [690375/690375]
= Priority greater than/xxx/yyy.zzz

4. = contrast/
Location/{
Rewrite ^/(. *) $ http://www.baidu.com permanent;
}

Location =/{
Rewrite ^/(. *) $ http://www.sina.com.cn permanent;
}
Results
[Root@agent3 tmp]# wget http://192.168.151.70
--12:31:09--http://192.168.151.70/
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:31:09--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.195, 61.172.201.194
Connecting to www.sina.com.cn|61.172.201.195|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690538 (674K) [text/html]
Saving to: ' INDEX.HTML.6 '

100%[========================================================================&GT] 690,538 1.93M/s in 0.3s

12:31:09 (1.93 MB/s)-' index.html.6 ' saved [690538/690538]
= priority is greater than/

5 ^~ Contrast ~
Location ~/images {
Rewrite/images http://www.baidu.com Permanent;
}

Location ^~/images {
Rewrite/images http://www.sina.com.cn Permanent;
}
Results
[Root@agent3 tmp]# wget http://192.168.151.70/images
--12:05:53--http://192.168.151.70/images
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:05:53--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.194, 61.172.201.195
Connecting to www.sina.com.cn|61.172.201.194|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690283 (674K) [text/html]
Saving to: ' index.html '

100%[========================================================================&GT] 690,283--.-K/s in 0.08s

12:05:54 (8.45 mb/s)-' index.html ' saved [690283/690283]
^~ priority is greater than ~
6. ^~ Contrast/xxx/yyy.zz
location/images/images.jsp {
Rewrite ^/(. *) $ http://www.baidu.com permanent;
}

Location ^~/images {
Rewrite ^/(. *) $ http://www.sina.com.cn permanent;
}
Results
[Root@agent3 tmp]# wget http://192.168.151.70/images/images.jsp
--12:10:58--http://192.168.151.70/images/images.jsp
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:10:58--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.194, 61.172.201.195
Connecting to www.sina.com.cn|61.172.201.194|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690375 (674K) [text/html]
Saving to: ' INDEX.HTML.1 '

100%[========================================================================&GT] 690,375--.-K/s in 0.08s
^~ priority is greater than/xxx/yyy.zzz
12:10:58 (8.55 MB/s)-' index.html.1 ' saved [690375/690375]

7. ~ Contrast/xxx/yyy.zzz
location/images/images.jsp {
Rewrite ^/(. *) $ http://www.baidu.com permanent;
}

Location ~/images {
Rewrite ^/(. *) $ http://www.sina.com.cn permanent;
}
Results:
[Root@agent3 tmp]# wget http://192.168.151.70/images/images.jsp
--12:19:17--http://192.168.151.70/images/images.jsp
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:19:17--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.195, 61.172.201.194
Connecting to www.sina.com.cn|61.172.201.195|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690441 (674K) [text/html]
Saving to: ' INDEX.HTML.2 '

100%[========================================================================&GT] 690,441--.-K/s in 0.07s

12:19:17 (9.12 MB/s)-' index.html.2 ' saved [690441/690441]
~ Priority greater than/xxx/yyy.zzz

8. ~ contrast/
Location/{
Rewrite ^/(. *) $ http://www.baidu.com permanent;
}

Location ~/{
Rewrite ^/(. *) $ http://www.sina.com.cn permanent;
}
Results
[Root@agent3 tmp]# wget http://192.168.151.70
--12:26:26--http://192.168.151.70/
Connecting to 192.168.151.70:80 ... Connected.
HTTP request sent, awaiting response ... Permanently moved
location:http://www.sina.com.cn [following]
--12:26:26--http://www.sina.com.cn/
Resolving www.sina.com.cn ... 61.172.201.194, 61.172.201.195
Connecting to www.sina.com.cn|61.172.201.194|:80 ... Connected.
HTTP request sent, awaiting response ... OK
length:690516 (674K) [text/html]
Saving to: ' INDEX.HTML.5 '

100%[========================================================================&GT] 690,516 2.23M/s in 0.3s

12:26:27 (2.23 MB/s)-' index.html.5 ' saved [690516/690516]
~ Priority greater than/

9./xxx/yyy.zzz Contrast/
Obviously, the/xxx/yyy.zzz priority is greater than/

In general, the location rule priority order is
= > ^~ > ~ >/xxx/yyy.zzz >/