1. WEB SERVER

2. Table of contents Overview Features Virtual hosting Large file support Bandwidth throttling Server-side scripting Path translation Load limits Services Top web servers Apache web server Microsoft web server Protocols used My conclusion

3. Web server It is a computer program It delivers content such as web pages The primary function of a web server is to deliver web pages to clients.

5. the server responds with the content of that resource

6. Otherwise display error message if unable to do so

8. Also be found embedded in devices such as

9. Printers

10. Routers

11. Web cams

12. Serving a local network

13. Cont.... It is used as a part of a system for monitoring and administrating the device.

15. Large file support

16. Bandwidth throttling

17. Server-side scripting

19. domain names using a

20. single IP address.

21. This allows one machine

22. to share its resources such

23. as

24. Memory

25. Processor cycle

26. use its resources more efficiently.

28. For example the domain name microsoft.com represents about a dozen IP addresses.

29. Domain names are used in URLs to identify particular Web pages.

30. For example, in the URL

31. http://www.pcwebopedia.com/index.html

32. the domain name is pcwebopedia.com.

34. .

36. Its to be able to serve more clients.

38. its running a script directly on the web server to generate dynamic web pages.

39. It is usually used to provide interactive web sites

41. for static request

42. a local file system resource

43. for dynamic requests

44. an internal or external program name

46. usually between 2 and 80,000, by default between 500 and 1,000 per IP address

49. Ask permission to the system to use more memory or more CPU resource

52. Too much traffic

53. Error

54. Anti-overload techniques Managing network traffic, by using : * Firewalls to block unwanted traffic coming from bad IP sources or having bad patterns. * HTTP traffic managers to drop, redirect or rewrite requests having bad HTTP patterns. * Bandwidth management and traffic shaping , in order to smooth down peaks in network usage.

55. Firewall protection

56. Trafiic usage

57. Bandwidth management

59. Microsoft

60. Igor Sysoev

61. Google

63. 24%

64. 8%

65. 7%

66. 0.46%

69. In 2009 it became the first web server software to surpass the 100 million web site milestone

70. Apache is developed and maintained by an open community of developers under Apache Software Foundation

72. GNU

73. FreeBSD

74. Linux,

75. Solaris

76. Novell NetWare

77. Mac OS X

78. Microsoft Windows OS/2 Released under the Apache License, Apache is characterized as open-source software.

80. Perl

81. Python

82. Tcl

83. PHP

84. Popular authentication modules include mod_access, mod_auth, mod_digest, and mod_auth_digest

86. Apache is used for many other tasks where content needs to be made available in a secure and reliable way

87. Programmers developing web applications often use a locally installed version of Apache in order to preview and test code as it is being developed.

89. the design of Apache is to reduce latency and increase throughput

90. relative to simply handling more requests

91. Ensuring consistent and reliable processing of requests within reasonable time-frames.

93. With IIS 6.0 the only platform currently supported is Windows Server 2003.

95. easier management

96. control through a variety of standard OS tools and utilities.

98. The redesign enables it to support a wide array of platforms in more efficient ways that lead toUnix- and Windows-specific execution models that make the best use of the OS.

99. Feature IIS Apache Independent Request Handler Yes Yes (limited) Multiple Process Request Handlers Yes Yes Thread Support Yes Yes (on a suitable OS)