# Queues & Jobs (Laravel)

> Queue 설정, job 생성, job 디스패치, job middleware, 실패한 job, job batching, queue worker

- 22 면접 질문
- Mid-Level
- [면접 질문: Laravel](https://sharpskill.dev/ko/technologies/laravel/interview-questions.md)

## 1. 데이터베이스를 사용하여 job을 저장하는 Laravel queue 드라이버는 무엇입니까?

**답변**

database 드라이버는 job을 Laravel 테이블(보통 'jobs')에 저장합니다. 이를 통해 Redis나 다른 외부 시스템을 설치할 필요가 없어 초기 배포가 간단해집니다. 대용량 처리나 성능이 중요한 경우에는 더 나은 성능과 확장성을 제공하는 Redis나 SQS를 선택하는 것이 좋습니다.

## 2. 새 job 클래스를 생성하는 Artisan 명령어는 무엇입니까?

**답변**

'php artisan make:job' 명령어는 app/Jobs 디렉터리에 새 job 클래스를 생성합니다. 이 클래스에는 queue worker가 실행하는 handle 메서드가 포함됩니다. 생성된 구조에는 job 관리를 쉽게 해주는 Dispatchable, InteractsWithQueue, Queueable 같은 유용한 trait도 포함됩니다.

## 3. Job 클래스의 어떤 메서드에 실행할 비즈니스 로직이 위치하나요?

**답변**

handle 메서드는 job의 비즈니스 로직을 담고 있습니다. Laravel은 worker가 job을 처리할 때 이를 자동으로 호출합니다. 이 메서드는 service container를 통한 의존성 주입을 지원하므로, 서비스를 메서드 시그니처에 직접 주입하여 테스트 용이성과 코드 유지보수성을 높일 수 있습니다.

## 19개 추가 질문 이용 가능

- Laravel 애플리케이션에서 이메일 발송에 queue를 사용하는 이유는 무엇인가요?
- queue를 거치지 않고 job을 동기적으로 디스패치하는 메서드는 무엇인가요?

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