nginx与node.js结合使用

Node.js是一个基于Chrome JavaScript运行时建立的平台，用于方便地搭建响应速度快、易于扩展的网络应用。Node.js 使用事件驱动，非阻塞I/O 模型而得以轻量和高效，非常适合在分布式设备上运行的数据密集型的实时应用，如实时聊天等等。然而对于gzip编码，静态文件，HTTP缓存，SSL处理，负载平衡和反向代理等，都可以通过nginx来完成，从而减小node.js的负载，并通过nginx强大的缓存来节省网站的流量从而提高网站的加载速度。

流程图

nginx

nginx配置如下：

http {

proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=one:8m max_size=3000m inactive=600m;

proxy_temp_path /var/tmp;

include mime.types;

default_type application/octet-stream;

sendfile on;

keepalive_timeout 65;

gzip on;

gzip_comp_level 6;

gzip_vary on;

gzip_min_length 1000;

gzip_proxied any;

gzip_types text/plain text/html text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

gzip_buffers 16 8k;

ssl_certificate /some/location/sillyfacesociety.com.bundle.crt;

ssl_certificate_key /some/location/sillyfacesociety.com.key;

ssl_protocols SSLv3 TLSv1;

ssl_ciphers HIGH:!aNULL:!MD5;

upstream silly_face_society_upstream {

server 127.0.0.1:61337;

server 127.0.0.1:61338;

keepalive 64;

}

server {

listen 80;

listen 443 ssl;

server_name sillyfacesociety.com;

return 301 $scheme://www.sillyfacesociety.com$request_uri;

}

server {

listen 80;

listen 443 ssl;

server_name www.sillyfacesociety.com;

error_page 502 /errors/502.html;

location ~ ^/(images/|img/|javascript/|js/|css/|stylesheets/|flash/|media/|static/|robots.txt|humans.txt|favicon.ico) {

root /usr/local/silly_face_society/node/public;

access_log off;

expires max;

}

location /errors {

internal;

alias /usr/local/silly_face_society/node/public/errors;

}

location / {

proxy_redirect off;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_set_header X-Forwarded-Proto $scheme;

proxy_set_header Host $http_host;

proxy_set_header X-NginX-Proxy true;

proxy_set_header Connection "";

proxy_http_version 1.1;

proxy_cache one;

proxy_cache_key sfs$request_uri$scheme;

proxy_pass http://silly_face_society_upstream;

}

配置段说明

http {

...

upstream silly_face_society_upstream {

server 127.0.0.1:61337;

server 127.0.0.1:61338;

keepalive 64;

}

...

}

nginx负载均衡多个nodo.js实例。keepalive 64 指示nginx在任何时候保持最少64个HTTP/ 1.1连接到代理服务器。如果有更多的流量nginx将打开更多的连接。

http {

...

server {

...

location / {

proxy_redirect off;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_set_header Host $http_host;

proxy_set_header X-NginX-Proxy true;

...

proxy_set_header Connection "";

proxy_http_version 1.1;

proxy_pass http://silly_face_society_upstream;

}

...

}

将符合哪些的请求发送到代理上。nginx的匹配规则可以取看看前面的文章。

nginx处理静态内容

http {

...

server {

...

location ~ ^/(images/|img/|javascript/|js/|css/|stylesheets/|flash/|media/|static/|robots.txt|humans.txt|favicon.ico) {

root /usr/local/silly_face_society/node/public;

access_log off;

expires max;

}

...

}

设置缓存

view source

print?

http {

...

proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=one:8m max_size=3000m inactive=600m;

proxy_temp_path /var/tmp;

...

}

http {

server {

...

location / {

...

proxy_cache one;

proxy_cache_key sfs$request_uri$scheme;

...

}

...

}

缓存是通过HTTP头部来控制的。

参考：http://blog.argteam.com/coding/hardening-node-js-for-production-part-2-using-nginx-to-avoid-node-js-load/

(责任编辑：IT)

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