diff --git a/app/models/user.php b/app/models/user.php
index 4ae10cf..5c0ee48 100644
--- a/app/models/user.php
+++ b/app/models/user.php
@@ -104,6 +104,14 @@ function get_all_users()
         ->findAll();
 }
 
+function get_all_user_ids()
+{
+    return Database::getInstance('db')
+        ->table(TABLE)
+        ->asc('id')
+        ->findAllByColumn('id');
+}
+
 function get_user_by_id($user_id)
 {
     return Database::getInstance('db')
diff --git a/producer.php b/producer.php
index bdbc2e8..5cac34d 100644
--- a/producer.php
+++ b/producer.php
@@ -11,16 +11,24 @@ if (php_sapi_name() !== 'cli') {
 
 $options = getopt('', array(
     'limit::',
+    'user::',
 ));
 
 $limit = get_cli_option('limit', $options);
+$user_id = get_cli_option('user', $options);
 $connection = new Pheanstalk(BEANSTALKD_HOST);
 
-foreach (Model\User\get_all_users() as $user) {
-    foreach (Model\Feed\get_feed_ids_to_refresh($user['id'], $limit) as $feed_id) {
+if ($user_id) {
+    $user_ids = array($user_id);
+} else {
+    $user_ids = Model\User\get_all_user_ids();
+}
+
+foreach ($user_ids as $user_id) {
+    foreach (Model\Feed\get_feed_ids_to_refresh($user_id, $limit) as $feed_id) {
         $payload = serialize(array(
             'feed_id' => $feed_id,
-            'user_id' => $user['id'],
+            'user_id' => $user_id,
         ));
 
         $connection