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From Yang <>
Subject hedwig hubs and bookkeeper?
Date Thu, 15 Sep 2011 07:15:45 GMT
I'm trying to understand how Hedwig works and its guarantees.

from my understanding of the wiki,
I guess that a hub is composed of all the servers of a bookkeeper
cluster, right?
then the BookKeeperPersistenceManager uses a bookkeeper client to
write to the Ledger, which is replicated using ZAB protocol onto all
the servers in the hub;  and subscribers would call
the persistence manager to read from the ledger ??


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