Account-Service Cassandra keyspace configuration:
CREATE KEYSPACE accountEventKeyspace WITH replication = {'class':'SimpleStrategy', 'replication_factor':1};
CREATE KEYSPACE productCatalogEventKeyspace WITH replication = {'class':'SimpleStrategy', 'replication_factor':1};
CREATE KEYSPACE purchaseOrderEventKeyspace WITH replication = {'class':'SimpleStrategy', 'replication_factor':1};