今天老蒋在研究WordPress加速的时候看到有网友推荐这款Cachify插件。从介绍功能上可以看到Cachify是通过缓存文章、页面和自定义文章类型为静态内容来优化我们网站的页面加载速度。我们可以从以下几个缓存方式中选择：数据库、服务器硬盘（HDD）、Memcached（仅在Nginx上可用）或 APC（Alternative PHP Cache）——直接在Web服务器的系统缓存中。用户访问时，页面或文章可直接从缓存中拉取。数据库和查询和PHP请求数可显著减少，如果选择了合适的缓存方式，这个数字可能为0。

这里我们直接搜索下载后激活安装插件。

如果我们仅仅只用这个插件的话，可以选择硬盘加速模式。

#A description for only https and sites that are accessible via https and http follows below.
Extension of the .htaccess (Apache), if the website is only accessible via http: (https://gist.github.com/sergejmueller/2027249#file-htaccess)
.htaccess extension for websites that can be reached under both http and https: (https://gist.github.com/mcguffin/31f80070d631d56da23cefb4ef1b6649)
BEGINN CACHIFY
# ENGINE ON
RewriteEngine On
# GZIP FILE
<IfModule mod_mime.c>
    RewriteCond %{REQUEST_URI} /$
    RewriteCond %{REQUEST_URI} !^/(wp-admin|wp-content/cache)/.*
    RewriteCond %{REQUEST_METHOD} !=POST
    RewriteCond %{QUERY_STRING} =""
    RewriteCond %{HTTP_COOKIE} !(wp-postpass|wordpress_logged_in|comment_author)_
    RewriteCond %{HTTP:Accept-Encoding} gzip
    RewriteCond %{DOCUMENT_ROOT}/path to/wp-content/cache/cachify/%{HTTP_HOST}%{REQUEST_URI}index.html.gz -f
    RewriteRule ^(.*) /path to/wp-content/cache/cachify/%{HTTP_HOST}%{REQUEST_URI}index.html.gz [L]
    AddType text/html .gz
    AddEncoding gzip .gz
</IfModule>
# HTML FILE
RewriteCond %{REQUEST_URI} /$
RewriteCond %{REQUEST_URI} !^/(wp-admin|wp-content/cache)/.*
RewriteCond %{REQUEST_METHOD} !=POST
RewriteCond %{QUERY_STRING} =""
RewriteCond %{HTTP_COOKIE} !(wp-postpass|wordpress_logged_in|comment_author)_
RewriteCond %{DOCUMENT_ROOT}/path to/wp-content/cache/cachify/%{HTTP_HOST}%{REQUEST_URI}index.html -f
RewriteRule ^(.*) /path to/wp-content/cache/cachify/%{HTTP_HOST}%{REQUEST_URI}index.html [L]
END CACHIFY
Nginx configuration file extension (https://gist.github.com/sergejmueller/1939164#file-gistfile1-nginxconf)
GZIP
gzip_static on;
CHARSET
charset utf-8;
INDEX LOCATION
location / {
if ( $query_string ) {
    return 405;
}
if ( $request_method = POST ) {
    return 405;
}
if ( $request_uri ~ /wp-admin/ ) {
    return 405;
}
if ( $http_cookie ~ (wp-postpass|wordpress_logged_in|comment_author)_ ) {
    return 405;
}
error_page 405 = @nocache;
try_files /wp-content/cache/cachify/https-${host}${uri}index.html /wp-content/cache/cachify/${host}${uri}index.html @nocache;
}
NOCACHE LOCATION
location @nocache {
try_files $uri $uri/ /index.php?$args;
}
PROTECT CACHE
location ~ /wp-content/cache {
internal;
}

如果我们选择的是硬盘换成，需要在上面 修改我们的.htaccess或者是Nginx配置配置文件。
我们还可以配合Memcached进行加速，比如我们在上图中选择Memcached加速模式，但是前提是我们的当前服务器是有安装Memcached。

比如我们在用宝塔面板的话，需要启动安装Memcached软件。
然后在站点配置中还需要配置设置。

#Extension of the Nginx configuration file (https://gist.github.com/sergejmueller/6113816#file-gistfile1-txt)
If you have errors please try to change memcached_pass localhost:11211; to memcached_pass 127.0.0.1:11211; This forces IPv4 because some servers that allow ipv4 and ipv6 are configured to bind memcached to ipv4 only.
GZIP
gzip_static on;
CHARSET
charset utf-8;
INDEX LOCATION
location / {
error_page 404 405 = @nocache;

if ( $query_string ) {
    return 405;
}
if ( $request_method = POST ) {
    return 405;
}
if ( $request_uri ~ "/wp-" ) {
    return 405;
}
if ( $http_cookie ~ (wp-postpass|wordpress_logged_in|comment_author)_ ) {
    return 405;
}
default_type text/html;
add_header X-Powered-By Cachify;
set $memcached_key $host$uri;
memcached_pass localhost:11211;
}
location @nocache {
try_files $uri $uri/ /index.php?$args;
}

这是官方给的示范Nginx设置。
这里，老蒋知道这个Cachify插件是可以实现WordPress缓存加速的，后面实战详细的来操作介绍使用Cachify插件的加速功能。