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Realm: 초고속 데이터베이스

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GDG Korean Android 10월 모임 발표.

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Realm: 초고속 데이터베이스

  1. 1. 렘 (Realm)
 초고속 모바일 데이터베이스 Leonardo YongUk Kim lk@realm.io
  2. 2. 모두가 그분을 싫어합니다.
  3. 3. String query = "SELECT " + Owner.NAME + ", " + Dog.NAME + ", " + City.NAME + " FROM " + Owner.TABLE_NAME + " INNER JOIN " + Dog.TABLE_NAME + " ON " + Owner.DOG_ID + " = " + Dog.ID + " INNER JOIN " + City.TABLE_NAME + " ON " + Owner.CITY_ID + " = " + City.ID + " WHERE " + Owner.NAME = "'" + escape(queryName) + "'";
  4. 4. ActiveRecord Ollie Androm Blurb Cupboard DBFlow DBQuery DBTools EasyliteOrm GreenDAO Orman OrmLite Persistence RushORM Shillelagh Sprinkles SquiDB SugarORM
  5. 5. 누가 쓰나요? (설마 우리만..)
  6. 6. 초고속 모바일 데이터베이스
  7. 7. 왜 빨라요?
  8. 8. Zero-copy object store
  9. 9. 전통적인 자료구조 컬럼 기반의 자료구조
  10. 10. 컬럼 기반의 자료구조 • 패딩이 필요없다. • 한 컬럼 단위의 질의에 캐쉬가 넘치지 않는다.
  11. 11. 또 무엇을 하나요? • boolean 형 자료는 8개씩 묶어서 저장합니다. • 데이터를 0, 1, 2, 4, 8, 16, 32, 64비트로 묶습니다. 여러 시도를 통해 SQLite 대비 최대 50% 정도의 공간 효율 확보. 데이터 질의에서 캐쉬 적중률 향상.
  12. 12. 어떻게 쓰나요?
  13. 13. 마이그레이션
  14. 14. Version 0.83 (Nullable)
  15. 15. Nullable non-Nullable
  16. 16. Version 0.84 (Async)
  17. 17. Q&A kr@realm.io

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