}

    /**
     * Check if the request is allowed under rate limiting rules.
     * @param ip the client IP address
     * @return true if the request is allowed
     */
    public boolean allowRequest(final String ip) {
        if (isWhitelisted(ip)) {
            return true;
        }

        final FessConfig fessConfig = ComponentUtil.getFessConfig();

            }
            sendBlockedResponse(httpResponse);
            return;
        }

        // Check rate limit
        if (!rateLimitHelper.allowRequest(clientIp)) {
            if (logger.isDebugEnabled()) {
                logger.debug("Rate limit exceeded: clientIp={}", clientIp);
            }