What is Laravel Pulse and how do custom recorders enable Octane telemetry?

composer require laravel/pulse
php artisan pulse:install
php artisan migrate
      

namespace App\Pulse;
use Laravel\Pulse\Recorders\Recorder;

class OctaneMetrics extends Recorder
{
    public function record(string $key, array $payload): void
    {
        if ($key === 'octane.worker') {
            pulse()->record('octane.memory', memory_get_peak_usage(true) / 1024 / 1024);
            pulse()->record('octane.requests', $payload['requests']);
        }
    }
}
      

public function boot()
{
    if (app()->octane?->runningInWorker()) {
        pulse()->record('octane.worker', [
            'memory_mb' => memory_get_peak_usage(true) / 1024 / 1024,
            'requests' => Octane::getRequestCount()
        ]);
    }
}