Why isn't getSession() returning the same session in subsequent requests distanced in short time periods?

Question

I am sending a $.getJSON (HTTP GET) request twice (with different data), one after another (lets say we have request1 and request2). I can see in the developer tool

Answer 1

I noticed that it happens when cookies are disabled in ...web.xml file:

    /some-app

    

    
        
            Keep a copy of the generated servlet class' java code.
        
    

    
        
            
             
        
    

It should be to retain session ID from the same connection.