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湾闵习
5 years ago
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6 hosts

7 hosts localhost

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

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

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

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

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

13 Your Computer

14 Local Name Server / Your ISP 1 Your Computer

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

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

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

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

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

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

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

22 Local Name Server / Your ISP 2 Root Name Server 3 Com Name Server Meituan Name Server 6 Your Computer Meituan Web Server

23 meituan.com

24 dig meituan.com dig +trace meituan.com dig dig s0.meituan.com

25 HTTP Hypertext Transfer Protocol

26 HTTP Hypertext Transfer Protocol HTTP

27 HTTP Hypertext Transfer Protocol HTTP

28 client server

29 request client server

30 request client server response

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

32 HTTP/ OK

33 404 Not Found 500 Server Error

34 301 Moved Permanently 302 Moved Temporarily 304 Not Modified 401 Unauthorized 403 Forbidden 502 Bad Gateway

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

36 AJAX X-Requested-With: XMLHttpRequest

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

38 cookie session

40 Apache HTTP Server

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

42 Mac sudo apachectl start

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

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

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

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

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

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

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

50 Nginx HTTP server load balancer

51 apache

52 nginx ngnix

53 ngnix nginx apache apache... apache apache

55 PHP Framework

56 where to start apache config webroot/index.php

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

58 ControllerFront::importConf router config URL

59 dispatch URL Request ControllerAction::runAction

60 runaction Action Plugin

61 classes/*

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

63 Cookie.php Session.php Cache.php

64 Debug.php Log.php Loader.php

65 Request.php Response.php

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

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

68 prepend.php ROOT/TS/DOMAIN_HOST include_path Debug autoload

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

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

ebook4-12

ebook4-12 12 CGI C G I (Common Gateway Interface) We b P H P C G I H T M L H T T P H T M L We b H T T P We We b I n t e r n e t R F C h t t p : / / w w w. i e t f. o rg / P H P C G I C G A p a c h e C G I P H P