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    iOS File System에서 각 영역의 특성은 무엇이 있는지 살펴보고, 다음의 데이터는 어느 영역에 저장하는 것이 좋을지 토의해봅시다. Document 이 디렉터리를 사용하여 사용자 생성 콘텐츠를 저장. 이 디렉토리의 내용은 파일 공유를 통해 사용자가 사용할 수 있다. 이 디렉토리에는 사용자에게 노출하려는 파일만 포함되어야 합니다. 이 디렉토리의 내용은 iTunes 및 iCloud에 의해 백업된다. Document/Inbox 외부 앱에서 가져온 데이터를 저장하는 디렉토리. 이 데이터를 읽고 삭제는 가능하지만, 생성 혹은 변경하려면 이 디렉토리 바깥으로 이동해야 한다. Library 사용자 데이터 파일이 아닌 모든 파일의 최상위 디렉터리다. 일반적으로 여러 표준 하위 디렉터리 중 하나에 파일을 넣는다. iOS 앱은 일반적으로 Application Support 및 Caches 하위 디렉터리를 사용. 사용자 지정 하위 디렉터리도 만들 수 있다. 사용자에게 노출하지 않으려는 파일에는 Library 하위 디렉토리를 사용해라. 앱은 사용자 데이터 파일에 이러한 디렉터리를 사용해서는 안 된다(Documents에 포함될 데이터 파일). Library 디렉토리의 내용(Cache 하위 디렉토리 제외)은 iTunes 및 iCloud에 의해 백업된다. tmp 이 디렉토리를 사용하여 앱 실행 사이에 지속할 필요가 없는 임시 파일을 작성. 앱은 더 이상 필요하지 않은 파일을 이 디렉토리에서 제거해야 한다. 앱이 실행되고 있지 않을 때 시스템에서 이 디렉터리를 제거할 수 있다. 이 디렉토리의 내용은 iTunes 또는 iCloud에 의해 백업되지 않는다. | 데이터 | 영역 | 이유 | |:---------------------------------------:|:--------------:|:-------------------------------------------------------------:| | 동영상 플레이어의 동영상 파일 | Document | 사용자가 iTunes로 동영상을 직접 추가하거나 삭제할 수 있음. | | 웹 서버에서 받아온 임시 데이터 | tmp | 재사용 되지 않는 임시 데이터이기 때문에 | | 사용자가 작성한 임시 메모 | Document | 사용자가 생성한 컨텐츠이기 때문 | | 메모장 앱의 코어데이터 저장소 | Library | 사용자가 접근할 수 없고 설정 데이터도 비슷한 맥락이라고 생각 | | 내 일기를 외부로 내보내기 위한 백업파일 | Document | 사용자가 백업파일에 접근해서 내려받을 수 있음. | | 채팅 앱의 대화내역 | Library | 사용자가 직접 접근할 수 없고, 앱을 재실행해도 남아 있기 때문. | | 어젯밤 술취해 남겨둔 음성메모 | Document | Document, 사용자가 직접 접근할 수 있기 때문. | | 사진편집을 위해 사진첩에서 가져온 사진 | Document/Inbox | 외부 앱에서 가져온 사진을 저장하기 때문에 Inbox. |

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