v3.0.15 在高并发环境下使用模型缓存查询报错

[ChinaMoli]

错误日志

[TypeError]                                                                            
think\db\PDOConnection::pdoQuery(): Return value must be of type array, null returned  

Exception trace:
 () at /www/vendor/topthink/think-orm/src/db/PDOConnection.php:727
 think\db\PDOConnection->pdoQuery() at /www/vendor/topthink/think-orm/src/db/PDOConnection.php:919
 think\db\PDOConnection->find() at /www/vendor/topthink/think-orm/src/db/BaseQuery.php:1361
 think\db\BaseQuery->find() at /www/find.php:13
 {closure}() at /www/find.php:15

复现代码

• find.php

  <?php
  
  declare(strict_types=1);
  
  use app\model\Article;
  
  require __DIR__ . '/vendor/autoload.php';
  
  (new \think\App(__DIR__))->console;
  
  (function () {
    for ($i = 0; $i < 100000; $i++) {
        Article::cache(86400)->find(200085);
    }
  })();
  

• update.php

  <?php
  
  declare(strict_types=1);
  
  use app\model\Article;
  
  require __DIR__ . '/vendor/autoload.php';
  
  (new \think\App(__DIR__))->console;
  
  (function () {
    for ($i = 0; $i < 100000; $i++) {
        $article = Article::cache(86400)->find(200085);
        ++$article->read_count;
        $article->save();
    }
  })();
  

  复现步骤

1. 打开两个控制台 A 和 B
2. 在控制台 A 执行 php find.php
3. 随即在控制台 B 执行 php update.php

Gif 演示