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centos缓存如何共享

派派 • • 技术经验

在CentOS系统中，实现缓存共享可以通过多种方式，以下是一些常见的方法：1. 使用Nginx作为反向代理服务器Nginx可以作为反向代理服务器，将请求转发到后端的应用服务器，并且可以配置缓存来提高性能。步骤：安装Nginx：sudo yum install nginx配置Nginx缓存：编辑Nginx配置文件（通常位于/etc/nginx/nginx.conf或/etc/nginx/c

在CentOS系统中，实现缓存共享可以通过多种方式，以下是一些常见的方法：

1. 使用Nginx作为反向代理服务器

Nginx可以作为反向代理服务器，将请求转发到后端的应用服务器，并且可以配置缓存来提高性能。

步骤：

  1. 安装Nginx：

    sudo yum install nginx

  2. 配置Nginx缓存：
    编辑Nginx配置文件（通常位于/etc/nginx/nginx.conf或/etc/nginx/conf.d/default.conf），添加缓存配置：

    http {
    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=my_cache:10m max_size=1g inactive=60m use_temp_path=off;

    server {
        listen 80;
        server_name example.com;

        location / {
            proxy_pass http://backend_server;
            proxy_cache my_cache;
            proxy_cache_valid 200 302 10m;
            proxy_cache_valid 404 1m;
        }
    }
}

  3. 重启Nginx：

    sudo systemctl restart nginx

2. 使用Redis或Memcached作为分布式缓存

Redis和Memcached是常用的分布式缓存系统，可以在多个服务器之间共享缓存数据。

安装和配置Redis：

  1. 安装Redis：

    sudo yum install redis

  2. 启动Redis服务：

    sudo systemctl start redis
sudo systemctl enable redis

  3. 配置Redis：
    编辑Redis配置文件（通常位于/etc/redis.conf），根据需要进行配置。

在应用中使用Redis：

  • Python示例： 
    import redis

r = redis.Redis(host='localhost', port=6379, db=0)
r.set('foo', 'bar')  # 设置缓存
value = r.get('foo')  # 获取缓存
print(value)

3. 使用GlusterFS进行文件系统级缓存共享

GlusterFS是一个分布式文件系统，可以将多个存储设备组合成一个大的存储池，并且支持缓存功能。

步骤：

  1. 安装GlusterFS：

    sudo yum install glusterfs-server glusterfs-client

  2. 启动GlusterFS服务：

    sudo systemctl start glusterd
sudo systemctl enable glusterd

  3. 创建GlusterFS卷：

    sudo gluster peer probe <server_ip>
sudo gluster volume create cache_volume transport tcp <server_ip>:/glusterfs/brick1 force
sudo gluster volume start cache_volume

  4. 挂载GlusterFS卷：

    sudo mount -t glusterfs <server_ip>:/cache_volume /mnt/cache

4. 使用Varnish Cache

Varnish是一个高性能的HTTP加速器，可以作为反向代理服务器，并且具有强大的缓存功能。

步骤：

  1. 安装Varnish：

    sudo yum install varnish

  2. 配置Varnish：
    编辑Varnish配置文件（通常位于/etc/varnish/default.vcl），添加缓存配置：

    vcl 4.0;
backend default {
.host = "127.0.0.1";
.port = "8080";
}
sub vcl_recv {
if (req.http.Cookie) {
set req.http.Cookie = ";" + req.http.Cookie;
set req.http.Cookie = regsuball(req.http.Cookie, "; +", ";");
set req.http.Cookie = regsuball(req.http.Cookie, ";([^ ]+)=([^ ;]+)", "\1=\2");
set req.http.Cookie = regsuball(req.http.Cookie, "^[; ]+|[; ]+$", "");
if (req.http.Cookie == "") {
unset req.http.Cookie;
}
}
}
sub vcl_backend_response {
if (beresp.http.Cache-Control ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Pragma ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Expires == "") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Cache-Control ~ "private") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Cache-Control ~ "no-store") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Cache-Control ~ "must-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Cache-Control ~ "proxy-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Cache-Control ~ "max-age") {
set beresp.uncacheable = false;
}
if (beresp.http.Cache-Control ~ "s-maxage") {
set beresp.uncacheable = false;
}
if (beresp.http.Cache-Control ~ "public") {
set beresp.uncacheable = false;
}
if (beresp.http.Cache-Control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Vary == "*") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-store") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "private") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=0") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=any") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "must-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "proxy-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "public") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "max-age") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "s-maxage") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-store") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "private") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=0") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=any") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "must-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "proxy-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "public") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "max-age") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "s-maxage") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-store") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "private") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=0") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=any") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "must-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "proxy-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "public") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "max-age") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "s-maxage") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-store") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "private") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=0") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=any") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "must-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "proxy-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "public") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "max-age") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "s-maxage") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-store") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "private") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=0") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=any") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "must-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "proxy-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "public") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "max-age") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "s-maxage") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-store") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "private") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=0") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "no-cache=any") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "must-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "proxy-revalidate") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "immutable") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "public") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http.Surrogate-control ~ "max-age") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "s-maxage") {
set beresp.uncacheable = false;
}
if (beresp.http.Surrogate-control ~ "only-if-cached") {
set beresp.uncacheable = true;
return (deliver);
}
if (beresp.http

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