Two web services (the rest) run on separate JVM instances with their own authentication.
Services are used by an external user input, server2 is intended for a customer service group. After logging in for external use, it can call server2 to query. In contrast, after a support client logs into server2, it can also call server1 to change the external user profile.
In other words, the two services trust each other. It is like an SSO in between. Since both of them work in the internal environment, I wonder if there is a simple solution for its implementation.
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