WordPress 深度性能优化指南：从3秒到0.5秒的极致提速方案

# Ubuntu 22.04 安装最新PHP  
sudo add-apt-repository ppa:ondrej/php  
sudo apt install php8.2-fpm php8.2-{mysql,gd,mbstring,xml,curl,zip,opcache}  

# 调整php.ini关键参数  
sudo nano /etc/php/8.2/fpm/php.ini  

opcache.enable=1  
opcache.memory_consumption=256  
opcache.max_accelerated_files=20000  
opcache.revalidate_freq=300  
max_execution_time = 180  
memory_limit = 256M  
upload_max_filesize = 64M  

# 安装性能优化工具  
sudo apt install mysqltuner percona-toolkit  

# 调整my.cnf配置（适用于2GB内存服务器）  
sudo nano /etc/mysql/my.cnf  

[mysqld]  
innodb_buffer_pool_size = 1G  
innodb_log_file_size = 256M  
query_cache_type = 1  
query_cache_limit = 4M  
query_cache_size = 64M  
tmp_table_size = 64M  
max_heap_table_size = 64M  
thread_cache_size = 8  
table_open_cache = 2048  

http {  
    # 代理缓存配置  
    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=WORDPRESS:100m inactive=24h max_size=1g;  

    # FastCGI缓存  
    fastcgi_cache_path /var/cache/nginx/fastcgi levels=1:2 keys_zone=FCACHE:100m inactive=1h max_size=512m;  
}  

server {  
    location ~ .php$ {  
        fastcgi_cache FCACHE;  
        fastcgi_cache_valid 200 301 302 30m;  
        fastcgi_cache_methods GET HEAD;  
        add_header X-FastCGI-Cache $upstream_cache_status;  
    }  

    location / {  
        proxy_cache WORDPRESS;  
        proxy_cache_valid 200 302 10m;  
        proxy_cache_valid 404      1m;  
    }  
}  

# 编译Nginx with Brotli  
sudo apt install libbrotli-dev  
./configure --with-http_brotli_module  

http {  
    brotli on;  
    brotli_comp_level 6;  
    brotli_types text/plain text/css application/json application/javascript text/xml application/xml image/svg+xml;  
}  

sudo apt install redis-server  
sudo pecl install redis  

define('WP_REDIS_HOST', '127.0.0.1');  
define('WP_REDIS_PORT', 6379);  
define('WP_REDIS_TIMEOUT', 1);  
define('WP_REDIS_READ_TIMEOUT', 1);  

-- 创建自动优化事件  
CREATE EVENT wp_optimize  
ON SCHEDULE EVERY 1 DAY  
DO  
BEGIN  
    OPTIMIZE TABLE wp_posts, wp_postmeta, wp_options;  
    DELETE FROM wp_posts WHERE post_type = 'revision';  
END  

<!-- 首屏关键CSS内联 -->  
<style>  
/*! critical.css */  
</style>  

<!-- 非关键JS延迟加载 -->  
<script defer src="app.js"></script>  

<picture>  
  <source srcset="image.webp" type="image/webp">  
  <source srcset="image.jpg" type="image/jpeg">  
  <img src="image.jpg" alt="示例">  
</picture>  

# 安装Prometheus + Grafana  
docker run -d --name=prometheus -p 9090:9090 prom/prometheus  
docker run -d --name=grafana -p 3000:3000 grafana/grafana  

# 使用wrk进行压力测试  
wrk -t12 -c400 -d30s https://yourdomain.com  

# 输出示例：  
Running 30s test @ https://yourdomain.com  
  12 threads and 400 connections  
  Requests/sec:   1356.78  
  Transfer/sec:     12.45MB  

# 限制请求频率  
limit_req_zone $binary_remote_addr zone=wp_limit:10m rate=30r/s;  

location / {  
    limit_req zone=wp_limit burst=50 nodelay;  
}  

# 使用mydumper快速备份恢复  
mydumper -u root -p password -B wordpress -o /backup  
myloader -u root -p password -B wordpress -d /backup  

☑️ 启用OPcache + Redis缓存  
☑️ 配置Brotli压缩  
☑️ 实现CSS/JS最小化  
☑️ 转换WebP格式图片  
☑️ 设置CDN加速  
☑️ 优化数据库索引  
☑️ 禁用Embeds功能  
☑️ 限制文章修订版本