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Registry server

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lukaszPulawski edited this page Apr 13, 2015 · 9 revisions

Registry server is a central service that gathers and provides information about all instances of services running in the system. Te principal goal of the registry server is to allow location-transparent communication between different applications in the distributed system.

Basically, registry server provides two elementary functions:

  • Service produces can register themselves in the registry with appropriate address
  • Service consumers can look-up instances of the service in the registry. And all that with virtually no shared configuration between the two applications.

This diagram shows how it works:

![sericeProvider->serviceRegistry, client->ServiceRegistry, client->serviceProvider](http://yuml.me/diagram/scruffy/class/[Service Provider{bg:orange}]-1:I am FooService at http...>[Registry Server], [FooClient] 2:I need FooService ->[Registry Server], [Registry Server] 3:Find it at http... ->[FooClient], [FooClient{bg:orange}]-4:POST http... >[Service Provider])

Ratel provides two implementations of the registry server:

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