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Maintaining state between two web services

 
Greenhorn
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Can anyone of you tell me , how can we maintain states between two web services. The problem on hand is i have one login service and one project service, Now user should be able to login using login service and then use the project service, so i need some kind of session management between login service and project service. I know how to maintain session in individual services, but i m not sure how can i have the same session used between both the services, Any other ideas to solve the problem will be appreciated too

Thanks for your help
 
Ranch Hand
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may be SAML and WS-Addressing can answer your questions.
 
Rancher
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The login service could return a token to the user, which is then passed to the project service along with the other parameters. Assuming that both services run in the same webapp, you can maintain a hashmap in the web app context with the token as key to more user information.
This won't work if the services don't run in the same web app, of course.
 
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