"tokenizer": {
        "japanese_tokenizer": {
          "type": "fess_japanese_reloadable_tokenizer",
          "mode": "normal",
          "user_dictionary": "${fess.dictionary.path}ja/kuromoji.txt",
          "discard_punctuation": false,
          "reload_interval":"1m"
        },
        "korean_tokenizer": {
            "type": "fess_korean_tokenizer",
            "decompound_mode": "mixed",

                buf.append('\t').append("error:").append(escapeValue(e.getLocalizedMessage()).replaceAll("\\s", " "));
                log(buf);
            }
        });
    }

    public void discard(final Object keyObj) {
        getCacheKey(keyObj).ifPresent(key -> {
            try {
                final StatsObject data = statsCache.getIfPresent(key);
                if (data != null) {