Who knows how to develop Sina's stock market chart? Solution

Who knows how to develop Sina's stock market chart? Question: Which of the following is the figure below? who knows how to develop Sina's stock market chart?

Example:
The following figure shows
Http://finance.sina.com.cn/realstock/company/sh000001/nc.shtml

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Java
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GD Library
Each time you open a webpage, you can use existing data to generate images.
The specific function is unknown.
Also, I am wondering if ajax can achieve dynamic growth.
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Not necessarily java, php can do it. we suggest you go to http://www.aditus.nu/jpgraph/about.php to see a professional php graphics library,
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Http://finance.cn.yahoo.com/q? S = 000001.ss

I personally think Yahoo's comparison nb...

It is flash. one file is generated every minute in the background, and it is added to the pseudo-static file...

In this way, the server calculates a much smaller amount of data and does not need to be computed once every access.

Floating things are made of flash and run on the client. very nb !!
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It is estimated that not every user logs in and calculates the task once every minute. a new graph is generated to overwrite the old one ....

Otherwise, so many people access the server with one hundred cpu cores.