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From "Matthew J. Dovey" <matthew.do...@oucs.ox.ac.uk>
Subject RE: UDDI spec question
Date Mon, 28 Mar 2005 18:18:40 GMT
At present it is regarded to be the responsibility of the WebService
container to both register WebServices when they are published and also
deregister them when they are "unpublished".

However, one of the things which has been discussed within the context
of the next version of UDDI is some kind of lifetime mechanism to try at
clean up "dead" entries in the registry. It isn't clear that this is a
spec change per se. For instance you could define a new tModel category
which held an obsolete time/date value, ensured that your WebServices
updated the resitry to keep this category value up to date, and then ran
a cron job (or equivalent) to clean the registry.

Matthew Dovey
Oxford University

> -----Original Message-----
> From: Combs Vaughn T Civ AFRL/IFSE [mailto:Vaughn.Combs@rl.af.mil] 
> Sent: Monday, March 28, 2005 5:39 PM
> To: 'juddi-dev@ws.apache.org'
> Subject: FW: UDDI spec question
> The UDDI spec has a subscription API (implementation 
> optional) that is to be used to essentially notify clients of 
> changes. 
> Have you seen anything about potential additions to the spec 
> to accommodate a leasing model between services and the 
> registry (i.e. if the registry hasn't seen a lease renewal 
> from a service in some time then it is dead and cleaned up 
> after)? I can understand that you may want a service 
> registration to persist even without a lease renewal but this 
> could be specified at service registration time and subject 
> to policy that is enforced on the registry side. I would 
> think that the problem of an ever growing registry containing 
> many dead endpoint/access point references to services would 
> make this an attractive option. 
> Many Thanks,
> Vaughn T. Combs
> Systems and Information Interoperability Branch
> Air Force Research Lab

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