YSlow 2.0

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My slides from the "Exceptional Website Performance with YSlow 2.0" show at CSDN (China Software Developers Network) in Beijing, Dec 6, 2008

Technology

YSlow 2.0 Stoyan Stefanov, Yahoo! Inc. Beijing, Dec 6 th 2008

About the presenter ,[object Object],[object Object],[object Object],[object Object]

The importance of performance ,[object Object],[object Object]

The importance of performance ,[object Object],[object Object],[object Object],[object Object]

The importance of front-end In FF3 HTML Page: 22%

The importance of front-end In IE6 HTML Page: < 5%

Front-end performance ,[object Object],[object Object],[object Object]

Exceptional Performance at Yahoo! ,[object Object],[object Object],[object Object],[object Object],[object Object]

Best practices ,[object Object],[object Object],[object Object]

Lossless image optimization http://smush.it

YSlow 1.0 ,[object Object],[object Object],[object Object],[object Object]

YSlow 2.0 ,[object Object],[object Object],[object Object],[object Object]

Rules ,[object Object],[object Object],[object Object],[object Object],[object Object]

A new rule ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The pool ,[object Object],[object Object],[object Object]

Grading algorithm 1.0 ,[object Object],[object Object],[object Object]

Grading 2.0 ,[object Object],[object Object],[object Object]

Warning! ,[object Object],[object Object]

Ruleset ,[object Object],[object Object],[object Object],[object Object]

Sharing the .xpi ,[object Object],[object Object]

New Ruleset ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Logic ,[object Object],[object Object],[object Object],[object Object],[object Object]

Tools 2.0 ,[object Object],[object Object],[object Object]

Import/export ,[object Object],[object Object],[object Object],[object Object]

Extensible tools ,[object Object],[object Object],[object Object],[object Object]

APIs ,[object Object],[object Object],[object Object]

Code organization ,[object Object],[object Object],[object Object]

Code quality ,[object Object],[object Object]

Pool of rule objects “ Yahoo! default” ruleset object “ Personal blog” ruleset object “ SEO” ruleset object L I N T

Contains result objects L I N T resultset HTML renderer <ol> <li>Minimize HTTP requests… JSON renderer

Types of extensions to YSlow 2.0. (summary)

An extension to YSlow can: ,[object Object],[object Object],[object Object],[object Object],[object Object]

New rules in YSlow 2.0 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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YSlow 2.0

1. YSlow 2.0 Stoyan Stefanov, Yahoo! Inc. Beijing, Dec 6 th 2008

5. The importance of front-end In FF3 HTML Page: 22%

6. The importance of front-end In IE6 HTML Page: < 5%

10.

11. Lossless image optimization http://smush.it

12.

13.

14. Rules and grading

15. Rules/ best practices

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17.

18.

19.

20.

21.

22.

23.

24.

25. Algos

26.

27.

28.

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34. Tools and import/export

35. Tools 1.0

36. Tools 2.0

37.

38. JavaScript tools

39. CSS tools

40. Import/Export

41.

42. Extensible tools menu

43.

44.

45. Development support

46.

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48.

49. Flow diagram

50. Pool of rule objects “ Yahoo! default” ruleset object “ Personal blog” ruleset object “ SEO” ruleset object L I N T

51. Contains result objects L I N T resultset HTML renderer <ol> <li>Minimize HTTP requests… JSON renderer

52. Types of extensions to YSlow 2.0. (summary)

53.

54.

55. Stoyan Stefanov [email_address]

YSlow 2.0

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