Website SEO Optimization Strategy

Differentiated Content Creation

Cluster optimization aims to improve the ranking performance of a series of websites in search engines through reasonable layout and content optimization. Differentiated content is crucial for each site, it must be independent and valuable, and avoid complete duplication. SEO plugins such as Yoast SEO can be used for keyword optimization.

Sample Code:

// After installing and activating the Yoast SEO plugin, keyword optimization can be performed when editing articles

add_action( 'wp_head', 'wpseo_head' );

function wpseo_head() {

global $post;

if ( is_singular() ) {



echo '';

Internal Linking Strategy

Reasonably arranging the internal linking structure of the cluster can improve weight transfer. Custom navigation menus can be added in the theme functions file functions.php.

Sample Code:

function custom_menu_pages() {

// Create links to related content pages on other sites within the cluster

$menu_array = array(

'label' => 'Related Articles'

'url' = '',


wp_nav_menu( array( 'theme_location' => 'custom_menu', 'items_wrap' => '%3$s', 'menu' => $menu_array ) );


add_action( 'wp_head', 'custom_menu_pages' );

Server Configuration Optimization

Ensure that each site has good loading speed, consider CDN acceleration, for example, using Cloudflare.

Sample Code:

# Log in to Cloudflare, point all site domain names to its DNS servers

$ dig +short

$ dig +short

# Modify the returned NS record to the NS record provided by Cloudflare

Dealing with DDoS Attacks on Site Clusters

When a site cluster is under a DDoS attack, the top priority is to ensure business continuity and user access experience.

Enable DDoS protection services, you can choose DDoS protection services from cloud service providers such as Alibaba Cloud, AWS, etc. For example, Alibaba Cloud's DDoS protection can detect and clean abnormal traffic in real time.

Use a load balancer to distribute traffic to multiple server nodes to reduce single point pressure. For example, in Nginx configuration.

Temporarily disable suspicious IP addresses. When specific IP addresses are found to be launching malicious requests, they can be temporarily blocked at the server or firewall level, for example in iptables.

Provide prompt feedback and tracking, report the attack situation to ISPs and service providers, obtain their technical support, and closely monitor the attack dynamics in order to adjust defense strategies.


For cluster SEO optimization, follow search engine regulations to ensure content quality and user experience. In the face of DDoS attacks, plan defense strategies in advance, including the use of professional protection services, optimizing network architecture, and other methods to ensure that the cluster can still operate stably when under attack.