/**
     * Stores search logs in the suggest index.
     */
    public void storeSearchLog() {
        final SearchLogBhv searchLogBhv = ComponentUtil.getComponent(SearchLogBhv.class);

        searchLogBhv.selectBulk(cb -> {
            final String from = LocalDateTime.now().minusDays(fessConfig.getPurgeSuggestSearchLogDay()).format(DateTimeFormatter.ISO_DATE);
            cb.query().addQuery(QueryBuilders.rangeQuery("requestedAt").gte(from));

     *
     * @param date the expiration time threshold - records expired before this time will be deleted
     */
    public void deleteBefore(final long date) {
        crawlingInfoBhv.selectBulk(cb -> cb.query().setExpiredTime_LessThan(date), list -> {
            final List<String> idList = list.stream().map(CrawlingInfo::getId).collect(Collectors.toList());