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![JPA] existById vs. getById vs. findById](https://images.velog.io/images/_koiil/post/7cdd1af6-655d-48b9-bfbd-3fde16bdebc7/%E1%84%89%E1%85%B3%E1%84%91%E1%85%B3%E1%84%85%E1%85%B5%E1%86%BC%E1%84%87%E1%85%AE%E1%84%90%E1%85%B3.jpeg "JPA] existById vs. getById vs. findById")