Started to learn etxjs in part of mvc, they are in 4-ke did. Make a simple example in the manual http://docs.sencha.com/ext-js/4-0/#!/guide/application_architecture
In chrome debugger it is visible that stretches there are a shitload of classes that I have not yet thought to use. Download before displaying the primitive shape in 10-20 seconds.
Can anyone suggest how to disable unnecessary or enable some kind of caching?