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Edit File: ComingSoonCacheInvalidator.php

<?php
namespace Automattic\WooCommerce\Internal\ComingSoon;

/**
 * Adds hooks to invalidate caches when the coming soon settings are changed.
 */
class ComingSoonCacheInvalidator {

/**
	 * Sets up the hooks.
	 *
	 * @internal
	 */
	final public function init() {
		add_action( 'update_option_woocommerce_coming_soon', array( $this, 'invalidate_caches' ) );
		add_action( 'update_option_woocommerce_store_pages_only', array( $this, 'invalidate_caches' ) );
	}

/**
	 * Invalidate the WordPress object cache and other known caches.
	 *
	 * @internal
	 */
	public function invalidate_caches() {
		// Standard WordPress object cache invalidation.
		wp_cache_flush();

/**
		 * Temporary solution to invalidate the WordPress.com Edge Cache. We can trigger
		 * invalidation by publishing any post. It should be refactored with a supported integration.
		 */
		$cart_page_id = get_option( 'woocommerce_cart_page_id' ) ?? null;
		if ( $cart_page_id ) {
			// Re-publish the coming soon page. Has the side-effect of invalidating the Edge Cache.
			wp_update_post(
				array(
					'ID'          => $cart_page_id,
					'post_status' => 'publish',
				)
			);
		}
	}
}

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