Re: [infinispan-dev] [infinispan-internal] Continuous Queries
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This is a general question so moving it to infinispan-dev.
On Oct 17, 2013, at 1:13 PM, Divya Mehra <dmehra(a)redhat.com> wrote:
Continuous Queries is a question we often get from JDG prospects.
With Querying expected to be fully supported in Library mode and Events/Listeners already
available in Library mode, is there a way an application developer would achieve a
continuous query in Library mode by writing a snippet of code leveraging Querying and
Listeners?
No. The mechanism behind continuos query is "clustered listeners": instead of
running the same query 1000 times/sec, you build the query result once and update it
during every cache insert/delete/update.
That is, a feasible path to achieve this functionality in JDG 6.2 via some custom coding,
even though it is not the most efficient path (because Continuous Queries are not
available out of the box).
You can always repeatedly query the cache, but that's not exactly continuos query.
Thanks,
Divya
Cheers,
--
Mircea Markus
Infinispan lead (www.infinispan.org)
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Mircea Markus