Question 1

What isCronExpression？

Accepted Answer

CronExpressionisoneKindusetoTaskRowTimeCharactersStringFormat，5or6SegmentGroup：Fraction Day Month Week，widelyusetoLinux crontabandEachClassDegree。

Question 2

CronExpression * * * * * ？

Accepted Answer

PerMinutesRowoneTime。fiveFractionOtherPerMinutes、PerHours、PerDay、Monthly、Weekly。