accessResultList.add(accessResult);

            if (accessResult.getHttpStatusCode() != 200) {
                // invalid page
                if (logger.isDebugEnabled()) {
                    logger.debug("Skipped. The response code is {}.", accessResult.getHttpStatusCode());
                }
                continue;
            }

            final long startTime = systemHelper.getCurrentTimeAsLong();

            final int days = ComponentUtil.getFessConfig().getPurgeSearchLogDay();
            if (days >= 0) {
                searchLogService.deleteBefore(days);
            } else {
                resultBuf.append("Skipped to purge search logs.\n");
            }
        } catch (final Exception e) {
            logger.error("Failed to purge search logs.", e);
            resultBuf.append(e.getMessage()).append("\n");
        }

        }
        return ret;
    }

    private int create() {
        if (!ComponentUtil.getFessConfig().isSuggestDocuments() && !ComponentUtil.getFessConfig().isSuggestSearchLog()) {
            logger.info("Skipped to create new suggest index.");
            return 0;
        }

        final SuggestHelper suggestHelper = ComponentUtil.getSuggestHelper();

        logger.info("Creating new suggest index.");

        switch (fesenType) {
        case Constants.FESEN_TYPE_CLOUD:
        case Constants.FESEN_TYPE_AWS:
            if (logger.isDebugEnabled()) {
                logger.debug("Skipped configsync flush: {}", fesenType);
            }
            callback.run();
            break;
        default:
            ComponentUtil.getCurlHelper().post("/_configsync/flush").execute(response -> {

            sessionIdList.add(sid);

            final String urlsStr = webConfig.getUrls();
            if (StringUtil.isBlank(urlsStr)) {
                logger.warn("No target urls. Skipped");
                break;
            }

            // interval time
            final int intervalTime =