KsDef ksDef = new KsDef(name, strategyClass, new ArrayList<CfDef>());
Map<String, String> strategyOptions = new HashMap<String, String>();
strategyOptions.put("replication_factor", String.valueOf(replicationFactor));
ksDef.setStrategy_options(strategyOptions);
client.system_add_keyspace(ksDef);
model.clear();
return "redirect:/keyspace/" + name + "/";
}