logger.debug("Initializing {}", this.getClass().getSimpleName());
        }

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final long windowMs = fessConfig.getRateLimitWindowMsAsInteger().longValue();
        final long blockDurationMs = fessConfig.getRateLimitBlockDurationMsAsInteger().longValue();

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

    /**
     * Get the value for the key 'rate.limit.block.duration.ms'. <br>
     * The value is, e.g. 300000 <br>
     * comment: Duration in milliseconds to block IP when limit exceeded.