cron 표현식

Cron syntax has five fields separated by a space, and each field represents a unit of time.

┌───────────── minute (0 - 59)
│ ┌───────────── hour (0 - 23)
│ │ ┌───────────── day of the month (1 - 31)
│ │ │ ┌───────────── month (1 - 12 or JAN-DEC)
│ │ │ │ ┌───────────── day of the week (0 - 6 or SUN-SAT)
│ │ │ │ │
│ │ │ │ │
│ │ │ │ │
 *  *  *  *  *

• 크론 표현식 쓸 때마다 까먹는다
• 깃허브 액션 문서 보다가 잘 정리되어 있는 거 발견해서 스크랩한다

참고

• https://docs.github.com/en/actions/learn-github-actions/events-that-trigger-workflows#schedule
• https://docs.aws.amazon.com/ko_kr/lambda/latest/dg/services-cloudwatchevents-expressions.html