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I have run Cassandra in production. A replication factor 3 cluster over 3 AZs should be able to survive loss of a single AZ. However, it has been my personal e
by psanford 7y ago
I have run Cassandra in production. A replication factor 3 cluster over 3 AZs should be able to survive loss of a single AZ.
However, it has been my personal experience that Cassandra handles instances going down much better than it handles instances getting very slow but staying online. In that case Cassandra will work extra hard to just spin its wheels. If you know that is what is happening you can be better off manually bringing those nodes offline.