Linux入门教程:Nginx自建cdn与ngx_cache_purge清除缓存,purge管编译ngx_cach
Nginx自建cdn在 https://www.xiaoz.me/archives/8775 已经介绍过,有兴趣的童鞋可参考,不过可以在这篇文章基础上继续完善,比如添加ngx_cache_purge模块来清除缓存。
编译ngx_cache_purge模块
清理Nginx缓存需要ngx_cache_purge模块帮助,可输入命令nginx -V查看已经编译的模块,如果没有ngx_cache_purge说明模块没有安装,则需要重新编译一下Nginx
模块下载地址为 http://labs.frickle.com/files/ngx_cache_purge-2.3.tar.gz ,如何编译Nginx可参考: https://www.xiaoz.me/archives/7126
配置ngx_cache_purge
在server段内加入下面的配置,并重载Nginx,在这里xiaoz被坑了很久,下面的cache_one请与keys_zone定义的值保持一致,否则nginx将无法启动。
location ~ /purge(/.*) {
allow all;
proxy_cache_purge cache_one $proxy_host$1$is_args$args;
error_page 405 =200 /purge$1;
}
如果想清理缓存,添加purge参数即可,如https://www.xiaoz.me/purge/xxx.png,如果该文件存在缓存,则会提示如下截图。若不存在缓存,则返回404,若无论什么情况均返回404,可能配置没成功。
WordPress自动刷新缓存
小z博客使用的Wordpress程序,如果启用CDN后页面被缓存,用户提交评论后无法马上显示出来,可以使用Ajax异步请求ngx_cache_purge接口,当用户提交评论的时候则清除该页面缓存。只需要下面的这段js添加到footer.php即可。
$(document).ready(function(){
$("#submit").click(function(){
var uri = "https://www.xiaoz.me/purge" + window.location.pathname;
$.get(uri,function(data,status){
return true;
});
});
});
代码中的https://www.xiaoz.me请改成您自己的域名,以下是小z博客CDN完整配置,仅供参考:
proxy_cache_path /data/caches levels=1:2 keys_zone=xiaozcdn:100m inactive=30m max_size=100m;
server
{
listen 443 ssl http2;
listen [::]:443 ssl http2;
ssl on;
ssl_certificate /xxx/www_xiaoz_me.crt;
ssl_certificate_key /xxx/www_xiaoz_me.key;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_session_tickets off;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';
ssl_prefer_server_ciphers on;
ssl_stapling on;
ssl_stapling_verify on;
server_name www.xiaoz.me;
charset utf-8,gbk;
#删除缓存
location ~ /dcache(/.*) {
allow all;
proxy_cache_purge xiaozcdn $proxy_host$1$is_args$args;
error_page 405 =200 /purge$1;
}
location / {
#proxy_set_header Accept-Encoding "";
proxy_pass https://www.xiaoz.me;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_cache xiaozcdn;
proxy_cache_valid 200 304 30m;
proxy_cache_valid 301 24h;
proxy_cache_valid 500 502 503 504 0s;
proxy_cache_valid any 1s;
#达到第几次被缓存?
proxy_cache_min_uses 1;
expires 12h;
proxy_cache_key $uri$is_args$args;
}
}
server
{
listen 80;
server_name www.xiaoz.me;
rewrite ^(.*) https://www.xiaoz.me$1 permanent;
}
总结
Nginx应用十分广泛,功能也非常强大,但是参数繁多,xiaoz所了解的不过九牛一毛。上述方案已经应用到小z博客中,具体效果有待观察和改进,若有问题请反馈。
原文链接:https://blog.csdn.net/weixin_36280540/article/details/116696726?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165934458816782246424187%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=165934458816782246424187&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~times_rank-5-116696726-null-null.nonecase&utm_term=%E8%87%AA%E5%BB%BAcdn
原创文章,作者:优速盾-小U,如若转载,请注明出处:https://www.cdnb.net/bbs/archives/8305