Updating the session value didn't allows me to break from a while loop

I have this code below of a while loop that will run indefinitely:

try
        {
            $this->kafkaConsumer->subscribe(['topic-'.$this->topicKey]);

            while (!session('closeConsumer'))
            {
                $message = $this->kafkaConsumer->consume(10000);
                
                switch ($message->err)
                {
                    case RD_KAFKA_RESP_ERR_NO_ERROR:
                        $this->sendMessage($message);
                        
                        // Commit offsets asynchronously
                        $this->kafkaConsumer->commitAsync($message);
                        break;
                    case RD_KAFKA_RESP_ERR__TIMED_OUT:
                        if (!$this->timedout)
                        {
                            $this->processTimedout();
                        }
                        break;
                    default:
                        $this->processError($message->err, $message->errstr());
                        break 2;
                }
            }
        }
        finally
        {
            $this->shutDown();
        }

I have set the session variable 'closeConsumer' to false then I make a REST API request which will run the first loop, then if I want to break from the loop I will make another REST API which will change the session value of 'closeConsumer' to true:

session(['closeConsumer', true]);

At first, the loop started but when I change the session variable to true it didn't break from the loop, it's like the session variable stays the same.

What is the problem exactly?

NOTE: the first REST API is a blocking one it means it will block in the controller function (I tried different solutions like queues but nothing work so I have no choice)