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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: 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 $http_host; proxy_set_header X-NginX-Proxy true; ... proxy_set_header Connection ""; proxy_http_version 1.1; proxy_pass http://silly_face_society_upstream; } ... } } 将符合哪些的请求发送到代理上。nginx的匹配规则可以取看看前面的文章。 http { ... server { ... location ~ ^/(images/|img/|javascript/|js/|css/|stylesheets/|flash/|media/|static/|robots.txt|humans.txt|favicon.ico) { root /usr/local/silly_face_society/node/public; access_log off; expires max; } ... } } 设置缓存 http { ... proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=one:8m max_size=3000m inactive=600m; proxy_temp_path /var/tmp; ... } http { server { ... location / { ... proxy_cache one; proxy_cache_key sfs$request_uri$scheme; ... } ... } } 缓存是通过HTTP头部来控制的。 helloworld var http = require('http'); http.createServer(function (request, response) { response.writeHead(200, {'Content-Type': 'text/plain'}); response.end('hello world\n'); }).listen(61337); console.log('Server running at http://127.0.0.1:61337/'); 然后用node helloworld.js指令开启,这样跑在本地的机子的nodejs的程序就算开起来了,占用的是8000端口,可自己修改。 此时确定在nginx的vhost.conf里面的设置应有: server { listen 80; server_name ogeek.net.ogeek.net; location / { proxy_pass http://127.0.0.1:61337; } } 将网站域名设置好,然后端口设置为80,最后proxy_pass设置为http://127.0.0.1:61337,将所有从ogeek.net:80的请求传递到nodejs程序去。 |
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