Server was running out of memory by using laravel queue

I'm using laravel lumen 5.5 api for my application. I have created job queue for sending notification for users. This notification can send from admin for any time and 4 or 5 notification admin will create and post to users. I'm having the below code for this job,

//Creating queue job logic in my API Controller $message = $request->input('message'); $notifyrequest = new NotificationJob(); $notifyrequest->setmessage($message, $request->input('title')); dispatch($notifyrequest); return array('error' => false, 'message' => 'Notification sent successfully.');

//Notificaiton Job logic in job folder class class NotificationJob implements ShouldQueue { use InteractsWithQueue, Queueable, SerializesModels; protected $message; protected $title; /** */ public function __construct() {} public function setmessage($message, $title){ $this->message = $message; $this->title = $title; } public function handle() { Log::info("Request Push Notificaiton Queues Handle".$this->message, ['title' => $this->title]); $Onesignalnotification = new Onesignalnotification(); $onesignalresponse = $Onesignalnotification->sendNotification($this->message, $this->title); Log::info("Notification has been sent", ['Response' => $onesignalresponse]); } }

//Sending notifications through one signal. Using filter for active users to receive notification. Currently 10K+ users are there. public function sendNotification($message, $title) { $content = array( "en" => $message ); $hashes_array = array();

$fields = array(
    'app_id' => $this->APP_ID,
    'included_segments' => array('Active Users'),
    'data' => array(
        "nav" => "1"
    ),
    'contents' => $content,
    'web_buttons' => $hashes_array
);

$fields = json_encode($fields);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://onesignal.com/api/v1/notifications");
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Content-Type: application/json; charset=utf-8',
    'Authorization: Basic apikey'
));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

$response = curl_exec($ch);
curl_close($ch);
$return["allresponses"] = $response;
$return = json_encode($return);

$data = json_decode($return, true);
return $data;
}

I have used supervisor for background process and my supervisor program looks like,

[program:laravel-worker] process_name=%(program_name)s_%(process_num)02d command=php /var/www/html/artisan queue:work redis --sleep=3 --tries=3 autostart=true autorestart=true numprocs=4 redirect_stderr=true stdout_logfile=/tmp/supervisor_worker.log

And also tried as like below way 1.command=php /var/www/html/artisan queue:work redis --sleep=3 --tries=3 --daemon 2.command=php /var/www/html/artisan queue:work redis --sleep=3 --tries=3 --once --daemon 3.command=php /var/www/html/artisan queue:listen redis --sleep=3 --tries=3 4.command=php /var/www/html/artisan queue:listen redis --sleep=3 --tries=3 --daemon

But still having an issue on memory. It is sending notification first time , if next post update means sending notification after that getting hang it produce memory leak. My server went to unresponse state.

and also my supervisor queue is not working when I reboot the server, manually I need to restart the supervisorctl. unix:///tmp/supervisor.sock refused connection