通常來說，一個優化良好的 Nginx Linux 服務器可以達到 500,000 – 600,000 次/秒 的請求處理性能，然而我的 Nginx 服務器可以穩定地達到 904,000 次/秒 的處理性能，并且我以此高負載測試超過 12 小時，服務器工作穩定。

這里需要特別說明的是，本文中所有列出來的配置都是在我的測試環境驗證的，而你需要根據你服務器的情況進行配置：

從 EPEL 源安裝 Nginx：

yum -y install nginx

備份配置文件，然后根據你的需要進行配置：

cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.orig  vim /etc/nginx/nginx.conf

# This number should be, at maximum, the number of CPU cores on your system.# (since nginx doesn't benefit from more than one worker per CPU.)# 這里的數值不能超過 CPU 的總核數，因為在單個核上部署超過 1 個 Nginx 服務進程并不起到提高性能的作用。worker_processes 24; # Number of file descriptors used for Nginx. This is set in the OS with 'ulimit -n 200000'# or using /etc/security/limits.conf# Nginx 最大可用文件描述符數量，同時需要配置操作系統的 "ulimit -n 200000"，或者在 /etc/security/limits.conf 中配置。 worker_rlimit_nofile 200000; # only log critical errors# 只記錄 critical 級別的錯誤日志error_log /var/log/nginx/error.log crit # Determines how many clients will be served by each worker process.# (Max clients = worker_connections * worker_processes)# "Max clients" is also limited by the number of socket connections available on the system (~64k)# 配置單個 Nginx 單個進程可服務的客戶端數量，（最大值客戶端數 = 單進程連接數 * 進程數 ）# 最大客戶端數同時也受操作系統 socket 連接數的影響（最大 64K ）worker_connections 4000; # essential for linux, optmized to serve many clients with each thread# Linux 關鍵配置，允許單個線程處理多個客戶端請求。use epoll; # Accept as many connections as possible, after nginx gets notification about a new connection.# May flood worker_connections, if that option is set too low.# 允許盡可能地處理更多的連接數，如果 worker_connections 配置太低，會產生大量的無效連接請求。multi_accept on; # Caches information about open FDs, freqently accessed files.# Changing this setting, in my environment, brought performance up from 560k req/sec, to 904k req/sec.# I recommend using some varient of these options, though not the specific values listed below.# 緩存高頻操作文件的FDs（文件描述符/文件句柄）# 在我的設備環境中，通過修改以下配置，性能從 560k 請求/秒 提升到 904k 請求/秒。# 我建議你對以下配置嘗試不同的組合，而不是直接使用這幾個數據。open_file_cache max=200000 inactive=20s;open_file_cache_valid 30s;open_file_cache_min_uses 2;open_file_cache_errors on; # Buffer log writes to speed up IO, or disable them altogether# 將日志寫入高速 IO 存儲設備，或者直接關閉日志。# access_log /var/log/nginx/access.log main buffer=16k;access_log off; # Sendfile copies data between one FD and other from within the kernel.# More efficient than read() + write(), since the requires transferring data to and from the user space.# 開啟 sendfile 選項，使用內核的 FD 文件傳輸功能，這個比在用戶態用 read() + write() 的方式更加高效。sendfile on; # Tcp_nopush causes nginx to attempt to send its HTTP response head in one packet,# instead of using partial frames. This is useful for prepending headers before calling sendfile,# or for throughput optimization.# 打開 tcp_nopush 選項，Nginux 允許將 HTTP 應答首部與數據內容在同一個報文中發出。# 這個選項使服務器在 sendfile 時可以提前準備 HTTP 首部，能夠達到優化吞吐的效果。tcp_nopush on; # don't buffer data-sends (disable Nagle algorithm). Good for sending frequent small bursts of data in real time.# 不要緩存 data-sends （關閉 Nagle 算法），這個能夠提高高頻發送小數據報文的實時性。tcp_nodelay on; # Timeout for keep-alive connections. Server will close connections after this time.# 配置連接 keep-alive 超時時間，服務器將在超時之后關閉相應的連接。keepalive_timeout 30; # Number of requests a client can make over the keep-alive connection. This is set high for testing.# 單個客戶端在 keep-alive 連接上可以發送的請求數量，在測試環境中，需要配置個比較大的值。keepalive_requests 100000; # allow the server to close the connection after a client stops responding. Frees up socket-associated memory.# 允許服務器在客戶端停止發送應答之后關閉連接，以便釋放連接相應的 socket 內存開銷。reset_timedout_connection on; # send the client a "request timed out" if the body is not loaded by this time. Default 60.# 配置客戶端數據請求超時時間，默認是 60 秒。client_body_timeout 10; # If the client stops reading data, free up the stale client connection after this much time. Default 60.# 客戶端數據讀超時配置，客戶端停止讀取數據，超時時間后斷開相應連接，默認是 60 秒。send_timeout 2; # Compression. Reduces the amount of data that needs to be transferred over the network# 壓縮參數配置，減少在網絡上所傳輸的數據量。gzip on;gzip_min_length 10240;gzip_proxied expired no-cache no-store private auth;gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml;gzip_disable "MSIE [1-6].";