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Nginx limit_req 限流：几行配置挡住大部分CC攻击_我的网站

A |     SEVENTEEN’s DK and SEUNGKWAN are teaming up for a new unit as DxS. Interestingly, they are also slated to release their first mini album, titled Serenade. It is slated for release on January 12, 2025. DxS unveiled a trailer with the caption, 'An Ordinary Love.' It was released through HYBE LABELS official YouTube channel. The video presents a cinematic narrative of lovers on different paths in life that mirrors the album’s emotional arc.          The trailer opens with DK unable to hang up an unanswered phone call. Scenes that follow depict him and his loved one existing in the same space yet feeling worlds apart. The symbolism was made apparent through imageries of wilted plants and dried fruit. They hinted at a relationship nearing its end. DK’s monotonous daily rhythm soon shifts when an unexpected encounter introduces new tension and a turning point in the story.SEUNGKWAN appears as a clerk at a comic book café. His character recalls a past love when he sees a customer’s book. A brief smile flickers across his face as he revisits the warmth of the memory, only for the moment to break when he accidentally drops a comic while rushing to hand over the books. The title of the fallen book, Blue, flashes across the scene. It adds intrigue to the unfolding narrative.Serenade, meaning "a love song sung at night," captures every moment between meeting and parting through DK and SEUNGKWAN’s emotional storytelling.          About SEVENTEENSEVENTEEN comprises S.COUPS, JEONGHAN, JOSHUA, JUN, HOSHI, WONWOO, WOOZI, THE 8, MINGYU, DK, SEUNGKWAN, VERNON and DINO. The group went on to solidify their global presence with FML. It had sold more than 6.4 million copies and became the IFPI-certified top-selling album worldwide in 2023. Celebrating their 10th anniversary this year, the K-Pop group have also released HAPPY BURSTDAY. It debuted at No. 2 on the Billboard 200. The group’s touring success has been equally remarkable, ranking No. 1 among K-Pop acts and No. 3 overall on Billboard’s 2025 midyear Boxscore charts.     Also Read: HYBE CINE FEST Brings K-Pop to Indian Theatres。    

　    一键部署OpenClaw        服务器CPU莫名飙高，带宽跑满，看日志全是同一个IP一秒打来几十个请求——这不是业务火了，是被CC了。扛CC的第一道闸门不在代码里，在Nginx的限流模块里，配置成本几乎为零。    limit_req的原理是漏桶：你设定一个速率，超速的请求直接返回503或延迟排队。先用limit_req_zone定义一个计数区，再在location里挂上limit_req，两步完事。    

# nginx.conf 的 http 块里定义限流区

    # 以客户端IP为key，10MB内存可存约16万个IP状态    # rate=10r/s 表示平均每秒最多放行10个请求    limit_req_zone $binary_remote_addr zone=req_per_ip:10m rate=10r/s;    # server 或 location 块里应用    server {    location / {    limit_req zone=req_per_ip burst=20 nodelay;    proxy_pass http://127.0.0.1:8080;    }    }    burst=20是缓冲队列长度，配合nodelay表示突发20个请求立即处理、不排队，超出就直接拒。想对登录、搜索这类昂贵接口管得更严，单独再定义一个rate=2r/s的zone挂上去就行，互不影响。    

# 对登录接口单独限流：每秒2个，突发5个
limit_req_zone $binary_remote_addr zone=login_limit:10m rate=2r/s;
 
location /login.php {
 limit_req zone=login_limit burst=5 nodelay;
 # 被限流的请求返回429而不是默认503
 limit_req_status 429;
 fastcgi_pass 127.0.0.1:9000;
}

    验证很简单：reload之后用ab压一下，ab -n 200 -c 20 https://你的域名/，看返回里有没有429或503；同时tail -f日志确认正常用户没被误伤。限流阈值别拍脑袋定，先统计自己站点的正常峰值，设成峰值的两倍左右再逐步收紧。限流是防守，如果卡死自己人就本末倒置了。    数据来源：nginx.org官方文档 ngx_http_limit_req_module 模块说明             

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Published on:08:37:37