1. currently, the full brush policy is used, that is, the whole image is refreshed every second (in xml format). The communication volume of complex images is about 30 kb (gzip compression), and the CPU usage of desktop browsers: FF and Google Chrome is about 3%.
2. mobile device test results are the same as 1
3. Use the excanvas plug-in IE8 on the desktop. The plug-in can be opened, but the efficiency is very low. It cannot be refreshed in seconds (the effect is unknown in IE9)
You can use canvas to develop real-time images for non-ie browsers, suitable for desktop and mobile systems.
There is still no efficient graphic display solution for IE8 and earlier desktops
For example, local refresh on the client should improve the communication and display efficiency, but greatly increase the development difficulty. However, if you want to refresh within seconds in IE8, it is estimated that only excellent local refresh technology can be used to achieve this.
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Author: coffee companion