nginx rewrite flag Nginx 请求处理流程

0. 基本用法是 rewrite patten replace flag

1. break可以理解为switch中的break，而last可以理解为continue，一个是跳出server{}的匹配规则，一个还将继续匹配之后的规则。

无论使用last还是break，浏览器上面的地址栏不能被改变，而另外两个临时重定向302--redirect、永久重定向--permanent将改变浏览器上地址栏。

2. 官方文档的说明： http://nginx.org/en/docs/http/ngx_http_rewrite_module.html

An optional flag parameter can be one of:
last
stops processing the current set of ngx_http_rewrite_module directives and starts a search for a new location matching the changed URI;

break
stops processing the current set of ngx_http_rewrite_module directives as with the break directive;

redirect
returns a temporary redirect with the 302 code; used if a replacement string does not start with “http://”, “https://”, or “$scheme”;


permanent
returns a permanent redirect with the 301 code.

 参考：https://cloud.tencent.com/developer/news/65131