Module ngx_http_rewrite_module
- Directives
 - break
 - if
 - return
 - rewrite
 - rewrite_log
 - set
 - uninitialized_variable_warn
 - Internal Implementation
 
 The ngx_http_rewrite_module module is used to change request URI using PCRE regular expressions, return redirects, and conditionally select configurations. 
 The ngx_http_rewrite_module module directives are processed in the following order: 
- the directives of this module specified on the server level are executed sequentially;
 - repeatedly: