[infinispan-dev] How the remote fetching for GET works in DIST mode

[Michal Linhard]

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.
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