# Message Queue — 实现细节

> 主流程见 SKILL.md，本文档为配置、Job、投递、事件驱动、监控的完整代码。

## 队列配置

```php
// config/autoload/async_queue.php
return [
    'default' => [
        'driver' => Hyperf\AsyncQueue\Driver\RedisDriver::class,
        'redis' => ['pool' => 'default'],
        'channel' => env('QUEUE_CHANNEL', '{queue}'),
        'timeout' => 2,
        'retry_seconds' => [1, 5, 10, 30, 60],
        'handle_timeout' => 60,
        'processes' => 1,
        'concurrent' => ['limit' => 10],
    ],
    'notification' => [ /* 独立队列，更高优先级 */ ],
];
```

## Job 类模板

```php
class {{JobName}}Job extends Job
{
    protected int $maxAttempts = 3;
    public function __construct(protected readonly int $resourceId, protected readonly array $payload = []) {}
    public function handle(): void {
        $resource = $this->getResource();
        if (!$resource || $this->isAlreadyProcessed($resource)) return;
        try { $this->process($resource); }
        catch (\Throwable $e) { logger()->error(...); throw $e; }
    }
}
```

## 投递与事件驱动

QueueService：`dispatch($job, $delay)`、`dispatchNotification($job)`、`dispatchDelayed($job, $delaySeconds)`。事件驱动：Event → Listener → QueueService->dispatch。示例：OrderStatusChanged → 异步通知、同步外部、更新统计缓存（debounce 5s）。

## 监控命令

Redis `{queue}:waiting`、`{queue}:delayed`、`{queue}:failed`、`{queue}:timeout`。failed > 100 告警。