Terence Yim created TWILL-22:
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             Summary: Improve service discovery API to allow push model for 
getting endpoint changes
                 Key: TWILL-22
                 URL: https://issues.apache.org/jira/browse/TWILL-22
             Project: Apache Twill
          Issue Type: New Feature
            Reporter: Terence Yim
            Assignee: Terence Yim


This feature is above enhancement the discovery API to support both pull and 
push model for getting latest set of registered service endpoints.

In the existing discovery API, client always need to poll for latest set of 
registered service through the live Iterable, which makes certain discovery 
strategy less efficient (e.g. sticky endpoint, which only change when the 
registered list change).




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