ULID

• Practical log investigation to restore failure time from UUIDv7/ULID 2026-03-07
  We will summarize the practical steps to use the time information included in UUIDv7 and ULID to restore the time of failure and speed up primary isolation. It also deals with the pitfalls of time differences, clock discrepancies, and identical ms collisions.
• UUID v4 / UUID v7 / ULID 철저 비교: 시계열성·효율·가독성을 어떻게 선택할까 2025-08-27
  UUID v4 / UUID v7 / ULID를 시계열성, 충돌 확률, DB 저장 효율, 구현상의 함정까지 비교 정리한다. UUID v1 / v6도 함께 보충한다.