Cache partner referrals signup links

modules/ppcp-onboarding/services.php

@@ -211,16 +211,17 @@ return array(
 		);
 	},
 	'onboarding.render'                         => static function ( ContainerInterface $container ) : OnboardingRenderer {
-
 		$partner_referrals         = $container->get( 'api.endpoint.partner-referrals-production' );
 		$partner_referrals_sandbox = $container->get( 'api.endpoint.partner-referrals-sandbox' );
 		$partner_referrals_data    = $container->get( 'api.repository.partner-referrals-data' );
 		$settings                  = $container->get( 'wcgateway.settings' );
+		$cache  = new Cache( 'ppcp-paypal-signup-link' );
 		return new OnboardingRenderer(
 			$settings,
 			$partner_referrals,
 			$partner_referrals_sandbox,
-			$partner_referrals_data
+			$partner_referrals_data,
+			$cache
 		);
 	},
 	'onboarding.render-options'                 => static function ( ContainerInterface $container ) : OnboardingOptionsRenderer {

modules/ppcp-onboarding/src/Render/OnboardingRenderer.php

@@ -11,6 +11,7 @@ namespace WooCommerce\PayPalCommerce\Onboarding\Render;
 
 use WooCommerce\PayPalCommerce\ApiClient\Endpoint\PartnerReferrals;
 use WooCommerce\PayPalCommerce\ApiClient\Exception\RuntimeException;
+use WooCommerce\PayPalCommerce\ApiClient\Helper\Cache;
 use WooCommerce\PayPalCommerce\ApiClient\Repository\PartnerReferralsData;
 use WooCommerce\PayPalCommerce\WcGateway\Settings\Settings;
 
@@ -47,6 +48,13 @@ class OnboardingRenderer {
 	 */
 	private $partner_referrals_data;
 
+	/**
+	 * The cache
+	 *
+	 * @var Cache
+	 */
+	protected $cache;
+
 	/**
 	 * OnboardingRenderer constructor.
 	 *
@@ -54,17 +62,20 @@ class OnboardingRenderer {
 	 * @param PartnerReferrals     $production_partner_referrals The PartnerReferrals for production.
 	 * @param PartnerReferrals     $sandbox_partner_referrals The PartnerReferrals for sandbox.
 	 * @param PartnerReferralsData $partner_referrals_data The default partner referrals data.
+	 * @param Cache                $cache The cache.
 	 */
 	public function __construct(
 		Settings $settings,
 		PartnerReferrals $production_partner_referrals,
 		PartnerReferrals $sandbox_partner_referrals,
-		PartnerReferralsData $partner_referrals_data
+		PartnerReferralsData $partner_referrals_data,
+		Cache $cache
 	) {
 		$this->settings                     = $settings;
 		$this->production_partner_referrals = $production_partner_referrals;
 		$this->sandbox_partner_referrals    = $sandbox_partner_referrals;
 		$this->partner_referrals_data       = $partner_referrals_data;
+		$this->cache                        = $cache;
 	}
 
 	/**
@@ -83,9 +94,17 @@ class OnboardingRenderer {
 			->with_products( $products )
 			->data();
 
+		$environment = $is_production ? 'production' : 'sandbox';
+		$product     = isset( $data['products']['PPCP'] ) ? 'ppcp' : 'express-checkout';
+		if ( $this->cache->has( $environment . '-' . $product ) ) {
+			return $this->cache->get( $environment . '-' . $product );
+		}
+
 		$url = $is_production ? $this->production_partner_referrals->signup_link( $data ) : $this->sandbox_partner_referrals->signup_link( $data );
 		$url = add_query_arg( $args, $url );
 
+		$this->cache->set( $environment . '-' . $product, $url );
+
 		return $url;
 	}