course-tencent-cloud/app/Caches/ChapterCounter.php

<?php

namespace App\Caches;

use App\Repos\Chapter as ChapterRepo;

class ChapterCounter extends Counter
{

    protected $lifetime = 7 * 86400;

    public function getLifetime()
    {
        return $this->lifetime;
    }

    public function getKey($id = null)
    {
        return "chapter_counter:{$id}";
    }

    public function getContent($id = null)
    {
        $chapterRepo = new ChapterRepo();

        $chapter = $chapterRepo->findById($id);

        if (!$chapter) return [];

        $content = [
            'lesson_count' => $chapter->lesson_count,
            'user_count' => $chapter->user_count,
            'comment_count' => $chapter->comment_count,
            'like_count' => $chapter->like_count,
        ];

        return $content;
    }

}