Snapshot miss lock time to time

[glamorous]

• Horizon Version: 5.x
• Laravel Version: 8.x
• PHP Version: 7.4
• Redis Driver & Version: predis/phpredis #.#.#

Description:

Because the cache-lock for metrics is exact 5minutes or 300s you can have cases when cron is running slow/fast, he can't obtain the lock and misses the snapshot for that timing.

Steps To Reproduce:

Having fast or slow environment.

Problem lays here:

/**
     * Execute the console command.
     *
     * @param  \Laravel\Horizon\Lock  $lock
     * @param  \Laravel\Horizon\Contracts\MetricsRepository  $metrics
     * @return void
     */
    public function handle(Lock $lock, MetricsRepository $metrics)
    {
        if ($lock->get('metrics:snapshot', 300)) {
            $metrics->snapshot();

            $this->info('Metrics snapshot stored successfully.');
        }

Proposal is to have this a couple of seconds lower or make it configurable so people can choose to have shapshots every 2 minutes for example.

[driesvints]

Sure, feel free to send in a PR.