public static String latestWriteIndexName(Model model) {
        String tableName = IndexController.INSTANCE.getTableName(model);
        long dayTimeBucket = TimeBucket.getTimeBucket(System.currentTimeMillis(), DownSampling.Day);
        if (model.isRecord() && model.isSuperDataset()) {
            return tableName + Const.LINE + compressTimeBucket(dayTimeBucket, SUPER_DATASET_DAY_STEP);
        }
        return tableName + Const.LINE + compressTimeBucket(dayTimeBucket, DAY_STEP);
    }
@return formatted latest index name, based on current timestamp.
oap-server/server-storage-plugin/storage-elasticsearch-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/elasticsearch/base/TimeSeriesUtils.java