blueflood-core/src/main/java/com/rackspacecloud/blueflood/io/astyanax/APreaggregatedMetricsRW.java
@Override
    public void insertMetrics(Collection<IMetric> metrics, Granularity granularity) throws IOException {
        try {
            AstyanaxWriter.getInstance().insertMetrics(metrics, CassandraModel.getPreaggregatedColumnFamily(granularity), isRecordingDelayedMetrics, clock);
        } catch (ConnectionException ex) {
            throw new IOException(ex);
        }
    }
@Override
    public void insertMetrics(Collection<IMetric> metrics, Granularity granularity) throws IOException {
        try {
            AstyanaxWriter.getInstance().insertMetrics(metrics, CassandraModel.getPreaggregatedColumnFamily(granularity), isRecordingDelayedMetrics, clock);
        } catch (ConnectionException ex) {
            throw new IOException(ex);
        }
    }
Inserts a collection of metrics to the correct column family based on
the specified granularity

@param metrics
@param granularity
@throws IOException