if (isWhitelisted(ip)) {
            return false;
        }

        // Check statically configured blocked IPs
        final Set<String> blockedIpSet = ComponentUtil.getFessConfig().getRateLimitBlockedIpsAsSet();
        if (blockedIpSet.contains(ip)) {
            if (logger.isDebugEnabled()) {
                logger.debug("IP in static block list: ip={}", ip);
            }
            return true;
        }