I want to migrate from extjs 3 to extjs 4. I have tested sample Extjs 4 example in rails 3. I have observed that page rendering time is very slow in extjs 4. I don't know what is the reason.
Can anybody tell me, what is the reason behind that? or
is there any problem in my app? and
What should I do to improve the perfomance of extjs 4?
Extjs 3 to Extjs 4
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8 Answers
Use MVC feature of Extjs4.0 or later version put store views model controller in different folder and call them using controller.
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