Claude Fable 5 — 깊은 추론과 강제 도구 호출

Claude Fable 5의 실제 출력

사고 강도 low로 Claude Fable 5에 한 번 보낸 프롬프트의 결과입니다. 편집하지 않은 원본입니다.

Explain the difference between optimistic and pessimistic locking in a database, in two short paragraphs, and say when to use each.

Optimistic locking assumes conflicts are rare. Transactions read data without locking it, and when they try to write, the system checks whether the data changed since it was read (typically via a version number or timestamp). If it did change, the update is rejected and the application must retry. Pessimistic locking assumes conflicts are likely: a transaction locks the data as soon as it reads it, blocking other transactions from modifying (or sometimes even reading) it until the lock is released. Use optimistic locking when contention is low—such as web applications where many users read data but rarely update the same records—since it avoids the overhead and blocking of locks and scales better. Use pessimistic locking when contention is high or the cost of a failed retry is expensive—such as financial transactions or inventory systems where multiple processes frequently update the same rows—since holding a lock guarantees the update will succeed without conflicts.

2026년 9월 27일에 생성했습니다. 실행할 때마다 답변은 다릅니다.