Embodiments of the present application provide a method and system for network access request control. During operation, the system may identify a network access request received by a website. The system may determine a type of the network access request, and control the network access request according to the type of the network access request. The type of the network access request can be one of a user access request, a crawler access request, or an invalid access request. Based on the type of the network access request and/or the access requests overall compared to a cluster stability threshold, the system may take measures to throttle the access requests or otherwise adjust a throttling policy. The system may take measures such as demoting a service to a lower priority, rejecting execution of an access request, redirecting an access request to another service cluster, and expanding a physical layer of a service cluster.