Настройка Nginx для работы с WP Super cache

В настройках плагин WP Super Cacheпроверьте, что установлена опция Использовать mod_rewrite для обслуживания файлов кэша. (Рекомендуется)под вкладке Дополнительно.

В настройках nginxпропишите:

server {
    server_name example.com www.example.com;

    access_log   /var/log/nginx/example.com.access.log;
    error_log    /var/log/nginx/example.com.error.log debug;

    root /var/www/example.com/htdocs;
    index index.php;

    set $cache_uri $request_uri;

    # POST requests and urls with a query string should always go to PHP
    if ($request_method = POST) {
    set $cache_uri 'null cache';
    }
    if ($query_string != "") {
    set $cache_uri 'null cache';
    }

    # Don't cache uris containing the following segments
    if ($request_uri ~* "(/wp-admin/|/xmlrpc.php|/wp-(app|cron|login|register|mail).php|wp-.*.php|/feed/|index.php|wp-comments-popup.php|wp-links-opml.php|wp-locations.php|sitemap(_index)?.xml|[a-z0-9_-]+-sitemap([0-9]+)?.xml)") {
    set $cache_uri 'null cache';
    }

    # Don't use the cache for logged in users or recent commenters
    if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_logged_in") {
    set $cache_uri 'null cache';
    }

    # Use cached or actual file if they exists, otherwise pass request to WordPress
    location / {
    try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html $uri $uri/ /index.php ;
    }

    location = /favicon.ico { log_not_found off; access_log off; }
    location = /robots.txt  { log_not_found off; access_log off; }

    location ~ \.php$ {
    try_files $uri =404;
    include fastcgi_params;
    fastcgi_pass 127.0.0.1:9000;
    }

    # Cache static files for as long as possible
    location ~* .(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|css|rss|atom|js|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {
    expires max; log_not_found off; access_log off;
    }
}

Перезагрузите Nginx выполнив:

nginx -t && service nginx reload

1. nginx
2. WP
3. WP Super cache