[infinispan-dev] JGRP-1317 and large clusters

FYI, if you're running large clusters, you might be interested to know that I implemented another optimization: JGRP-1317 [1]. The effect of it is that (in decreasing order of importance): - Regular view messages to existing members don't carry a digest any longer. This is a significant size reduction, as a digest has 2 longs per member (although compressed for network transmission) - Where we have a view and a digest (e.g. JoinRsp, merge response, MergeView), the digest's 'members' field and the view's 'members' field point to the same memory location - When we send such an object across the network, the 'members' field is only marshalled once, leading to smaller messages Next up, I'm going to tackle [2] which will reduce the size of view messages even further: instead of sending the *full view* every time, we only send delta views. I believe JGRP-1317 and JGRP-1354 will have a huge impact on systems with a large number of nodes. [1] https://issues.jboss.org/browse/JGRP-1317 [2] https://issues.jboss.org/browse/JGRP-1354 -- Bela Ban, JGroups lead (http://www.jgroups.org)