How are service IDs generated such that they can be globally unique?
The first time a Jini service registers itself with a lookup service, the lookup service creates a service ID for that service. The service provider is supposed to remember this ID forever. Every time it registers its service with any lookup service from that point forward, it should specify its service ID.
The first time a Jini service registers itself with a lookup service, the lookup service creates a service ID for that service. The service provider is supposed to remember this ID forever. Every time it registers its service with any lookup service from that point forward, it should specify its service ID. The service ID provided by the lookup service is supposed to be globally unique. In other words, a particular service ID, if it is ever generated, should be generated only once by any lookup service, anywhere in the universe, at any time. How does this work? First of all, the service ID is 128 bits long. The size of the ID itself makes it unlikely that any two randomly generated service IDs would come out to be the same value, so long as the random number generators started with different seed values. The Jini lookup service uses a technique that includes randomization, but also includes other techniques that in effect guarantees the uniqueness of each service ID until the year 3400
