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。
nginx配置如下：
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| 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
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| http {
...
upstream silly_face_society_upstream {
server 127.0.0.1:61337;
server 127.0.0.1:61338;
keepalive 64;
}
...
}
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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。
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| 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 $http_host;
proxy_set_header X–NginX–Proxy true;
...
proxy_set_header Connection “”;
proxy_http_version 1.1;
proxy_pass http://silly_face_society_upstream;
}
...
}
}
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将符合哪些的请求发送到代理上。nginx的匹配规则可以取看看前面的文章。
nginx处理静态内容
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| http {
...
server {
...
location ~ ^/(images/|img/|javascript/|js/|css/|stylesheets/|flash/|media/|static/|robots.txt|humans.txt|favicon.ico) {
root /usr/local/silly_face_society/node/public;
access_log off;
expires max;
}
...
}
}
|
设置缓存
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| http {
...
proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=one:8m max_size=3000m inactive=600m;
proxy_temp_path /var/tmp;
...
}
http {
server {
...
location / {
...
proxy_cache one;
proxy_cache_key sfs$request_uri$scheme;
...
}
...
}
}
|
缓存是通过HTTP头部来控制的。
