Google财经如何更新股票价格? [英] How does Google Finance update stock prices?

问题描述

如果您使用Google财经，则会实时查看股价更新.但是，我看不到每个价格变化的ajax请求.它到底如何接收数据?Ajax调用确实经常发生，但并非每次更改价格都发生.

If you use Google Finance, you see the stock price update in real time. However, I do not see ajax requests for each price change. How exactly is it receiving it's data? The ajax calls do happen every so often but not for every price change.

https://www.google.com/finance?q=aapl

推荐答案

图表确实是由Flash提供的，但是股票的价格是HTML格式，并且是实时更新的.

It is true that the graph is supplied by flash, but the price of the stock is in HTML and updated in real time.

通过查看连接，您会注意到其中一个连接保持打开状态.我的猜测是它提供了数据:

By looking at the connections, you'll notice that one of the connection stays open. My guess is that it provides the data:

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