2.Nginx学习-The HTTP Core module
http core module是Ngnix提供WEB服务的最核心模块，默认被开启。本篇文章将讲述该模块的一些配置配置文件结构:
http {
server {// virtual website
location{
}
}
server{
location{
}
}
}
Location modifer 匹配规则
匹配优先级与顺序： = -->No modifer --> ^~ modifier --> ~ or ~* modifier -->no modifier
[*] = 字符串精准匹配，不支持正则
server {
server_name website.com;
location = /abcd {
[…]
}
}
http://website.com/abcd (exact match 精确匹配)
http://website.com/ABCD （如果OS忽略大小写，则可以匹配）
http://website.com/abcd?param1¶m2（匹配，忽略query参数）
http://website.com/abcd/ (不匹配，多了一个slash斜杠)
http://website.com/abcde (不匹配)
[*] No modifer ：begin with the specifed pattern. You may not use regular expressions
server {
server_name website.com;
location/abcd {
[…]
}
}
http://website.com/abcd (exact match 精确匹配)
http://website.com/ABCD （如果OS忽略大小写，则可以匹配）
http://website.com/abcd?param1¶m2（匹配，忽略query参数）
http://website.com/abcd/ (匹配)
http://website.com/abcde (匹配)
[*] The ~ modifer ：case-sensitive 匹配正则
server {
server_name website.com;
location ~ ^/abcd${
[…]
}
}
http://website.com/abcd (exact match 精确匹配)
http://website.com/ABCD （不匹配）
http://website.com/abcd?param1¶m2（匹配，忽略query参数）
http://website.com/abcd/ (不匹配，多了一个斜杠)
http://website.com/abcde (不匹配)
[*] The ~* modifer ：case-insensitive 匹配正则
server {
server_name website.com;
location ~* ^/abcd${
[…]
}
}
http://website.com/abcd (exact match 精确匹配)
http://website.com/ABCD （匹配）
http://website.com/abcd?param1¶m2（匹配，忽略query参数）
http://website.com/abcd/ (不匹配，多了一个斜杠)
http://website.com/abcde (不匹配)
[*] The ^~ modifer:if the pattern is matched, Nginx stops searching for other patterns
[*] The @ modifer : 定义内部location块，可以通过内部跳转访问
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