final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (clickLogQueue.size() > fessConfig.getLoggingClickMaxQueueSizeAsInteger()) {
            logger.warn("Click log queue size exceeded: queueSize={}, limit={}. Skipped.", clickLogQueue.size(),
                    fessConfig.getLoggingClickMaxQueueSizeAsInteger());
            return;
        }
        clickLogQueue.add(clickLog);
    }

    /**