fix(shopify): change throttling amount

Author: shawnhind

lib/CurlRequest.php

@@ -145,7 +145,7 @@ protected static function processRequest($ch, $url)
 
  $output = null;
  while(1) {
- Redis::throttle($host)->allow(2)->every(1)->then(function () use (&$ch, &$output) {
+ Redis::throttle($host)->allow(2)->every(2)->then(function () use (&$ch, &$output) {
  $output = curl_exec($ch);
  self::$lastHttpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  },