ngx_cache_purge是nginx模块，此模块可以清理nginx的FastCGI、proxy、SCGI和uWSGI的缓存。配置指令（相同位置语法）fastcgi_cache_purgesyntax: fastcgi_cache_purgeon|off|[fromall|[..]]default: nonecontext: http, server, location允许从FastCGI的缓存中清除所选页面。proxy_cache_purgesyntax: proxy_cache_purgeon|off|