Yep, this was discussed before, see
http://markmail.org/thread/isqzt77ywclokedd (it starts with other
stuff, but it discusses this as well).
There's also an issue in JIRA:
https://issues.jboss.org/browse/ISPN-825
Cheers
Dan
On Thu, Apr 26, 2012 at 1:52 AM, Michal Linhard <mlinhard(a)redhat.com> wrote:
Maybe this is an ancient topic discussed, ages ago somewhere, but if
there's a quick answer, please save me from searching through tons of
archives.
Let's have a DIST mode cache.
When we're doing a memcached/REST tests where for each request there's
cca numOwners/numNodes probability that we'll hit the owner,
in numNodes=4, numOwners=2 this means cca every second request needs a
remote fetch (assume no L1 cache)
I'm just looking at the DistributionManagerImpl.retrieveFromRemoteSource
and trying understand how it works.
Does it really cause 2 more GET request processing in the cluster ?
OK even when we're assuming serving a GET request should be quick, I'd
like to see how it would perform if we only allowed getting from the
first owner.
I guess right now we don't allow configuring this. Are there any catches
with this ?
m.
--
Michal Linhard
Quality Assurance Engineer
JBoss Datagrid
Red Hat Czech s.r.o.
Purkynova 99 612 45 Brno, Czech Republic
phone: +420 532 294 320 ext. 62320
mobile: +420 728 626 363
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