WHMCS Resource Prefetching Skill

Overview

This skill provides patterns for resource prefetching in WHMCS.

Implementation Patterns

Prefetch Manager

<?php
/**
 * WHMCS Resource Prefetching
 * Prefetches resources for faster navigation
 */

namespace WHMCS\Module\Performance\Prefetch;

class PrefetchManager {
    /**
     * Generate prefetch hints
     */
    public function generatePrefetchHints(array $pages): string {
        $hints = [];

        foreach ($pages as $page) {
            $hints[] = "<link rel=\"prefetch\" href=\"{$page}\">";
        }

        return implode("\n", $hints);
    }

    /**
     * Prefetch for navigation prediction
     */
    public function predictAndPrefetch(): string {
        return <<<SCRIPT
document.addEventListener("mouseover", function(e) {
    const link = e.target.closest("a");
    if (link && link.href) {
        const prefetch = document.createElement("link");
        prefetch.rel = "prefetch";
        prefetch.href = link.href;
        document.head.appendChild(prefetch);
    }
}, { passive: true });
SCRIPT;
    }
}

Best Practices

1. DNS Prefetch: Prefetch DNS for external domains
2. Preconnect: Establish early connections
3. Prefetch Pages: Prefetch likely next pages
4. Predictive: Use navigation prediction
5. Budget: Don't prefetch too aggressively

Related Skills

• whmcs-http2-push
• whmcs-lazy-loading
• whmcs-caching-strategies
• whmcs-browser-caching