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http://panweizeng.com

http://meituan.com

http://meituan.com hosts

http://meituan.com hosts localhost 127.0.0.1

/etc/nsswitch.conf /etc/hosts /etc/resolv.conf

Mail Client Web Browser cache 1-30mins Clients Programs Your Computer

Mail Client Web Browser cache 1-30mins hosts Clients Programs Your Computer

Mail Client Web Browser cache 1-30mins Clients Programs hosts DNS Resolver local cache Your Computer

Your Computer

Local Name Server / Your ISP 1 Your Computer

Local Name Server / Your ISP 2 Root Name Server 1 Your Computer

Local Name Server / Your ISP 2 Root Name Server 3 Com Name Server 1 Your Computer

Local Name Server / Your ISP 2 Root Name Server 3 Com Name Server 4 1 Meituan Name Server Your Computer

Local Name Server / Your ISP 2 Root Name Server 3 Com Name Server 4 1 5 Meituan Name Server Your Computer

Local Name Server / Your ISP 2 Root Name Server 3 Com Name Server 4 1 5 Meituan Name Server 6 Your Computer Meituan Web Server

meituan.com www.meituan.com

dig meituan.com dig +trace meituan.com dig www.meituan.com dig s0.meituan.com

HTTP Hypertext Transfer Protocol

HTTP Hypertext Transfer Protocol HTTP

client server

request client server

request client server response

GET /path/to/file/index.html HTTP/1.0

HTTP/1.0 200 OK

404 Not Found 500 Server Error

301 Moved Permanently 302 Moved Temporarily 304 Not Modified 401 Unauthorized 403 Forbidden 502 Bad Gateway

Request Headers Host: www.meituan.com User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

AJAX X-Requested-With: XMLHttpRequest

Response Headers Server: nginx Date: Mon, 20 Jun 2011 09:12:11 GMT Content-Type: application/json; charset=utf-8; Content-Length: 138

cookie session

Apache HTTP Server

sudo /etc/init.d/httpd start sudo /etc/init.d/httpd stop sudo /etc/init.d/httpd restart/graceful

Mac sudo apachectl start

/etc/httpd/conf/http.conf /etc/http/conf/vm/*

ServerRoot "/etc/httpd" DocumentRoot "/opt/www/webroot" Listen 80

User apache Group apache LoadModule php5_module /usr/lib64/ httpd/modules/libphp5.so

DirectoryIndex index.php index.html AccessFileName.htaccess ErrorLog /opt/logs/error_log ErrorDocument 404 /not-found.html

<Directory /> Options FollowSymLinks Indexes AllowOverride None </Directory>

<VirtualHost *:80> ServerName www.xpmt.com ServerAlias *.xpmt.com DocumentRoot /home/panweizeng/mt/webroot RewriteEngine on RewriteRule ^/(static\/.*)$ /$1 [L] RewriteRule ^/(.*)$ /index.php [L] </VirtualHost>

<VirtualHost *:80> ServerName xpmt.com RewriteEngine On RewriteRule ^/(.*)$ http://www.xpmt.com/$1 [L,R] </VirtualHost>

Nginx HTTP server load balancer

apache

nginx ngnix

ngnix nginx apache apache... apache apache

PHP Framework

where to start apache config webroot/index.php

index.php if ($redirectto = checksource()) { header("location: $redirectto"); die; } ControllerFront::getInstance()->dispatch();

ControllerFront::importConf router config URL

dispatch URL Request ControllerAction::runAction

runaction Action Plugin

classes/*

Core.php Obj.php DBObj.php DB.php

Cookie.php Session.php Cache.php

Debug.php Log.php Loader.php

Request.php Response.php

ControllerFront.php ControllerAction.php ControllerActionPlugin.php ControllerBusiness.php

prepend.php(php -i grep prepend) /opt/www.config/prepend.php prepend.php ~/mt/config/prepend.php config/*

prepend.php ROOT/TS/DOMAIN_HOST include_path Debug autoload

autoload Loader::registerAutoload Loader::load class/model/controller/helper

http://bj.meituan.com/deal/959830.html http://bj.meituan.com/deals/page2

Macbook apache+php +mysql mini web framework php/python/ ruby router dispatcher orm