*/
    public void offer(final LogNotificationEvent event) {
        int maxBufferSize;
        try {
            maxBufferSize = ComponentUtil.getFessConfig().getLogNotificationBufferSizeAsInteger();
        } catch (final Exception e) {
            maxBufferSize = 1000;
        }
        queue.offer(event);
        if (size.incrementAndGet() > maxBufferSize) {
            if (queue.poll() != null) {

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     * @throws NumberFormatException When the property is not integer.
     */
    Integer getLogNotificationBufferSizeAsInteger();

    /**
     * Get the value for the key 'log.notification.interval'. <br>
     * The value is, e.g. 300 <br>