AEM session management across multiple publishers

hi,

i am using aem 6.1

i have aem structure as 1 author 2 publisher 2 dispatcher 1 load balancer.

can anyone help me with session management.

i storing one token in my session which is used through out.

but if request goes to another publisher how it will get served.

eg:

access_token--> getting from service response.

HttpSession session=request.getSession(); 

session.setAttribute("accessToken", access_token);

is there any better way doing it?

please help