Versin with batches

CustomerEventDao.java

public void storeEvents(ConsistencyLevel consistencyLevel, CustomerEvent... events) {
    BatchStatement batchStatement = new BatchStatement(BatchStatement.Type.UNLOGGED);
    batchStatement.enableTracing();

    for (CustomerEvent event : events) {
        batchStatement.add(createBoundStatement(consistencyLevel, event));
    }

    ResultSet execute = session.execute(batchStatement);
    logTraceInfo(execute.getExecutionInfo());
}