| 1 |
Use of Lookup Service is typical yellow pages service in all distributed systems (cf. DNS etc.)
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| 2 |
Use of Java as IDL(Interface Definition Language) and RMI as transport layer is specific to Jini
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Clearly can be replaced by other object models and in particular XML can be used to specify services
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| 3 |
Has a particular query syntax with attribute array and use of simple yes/no matching
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Could and perhaps should be generalized
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Concept of "services with precise definitions" and "queries accessing classes of services" seems general
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| 4 |
Has a "leasing concept" which seems very valuable in distributed computing where resources are dynamic and fault tolerance important
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