Class AchievementRevisionClock

Stamps every achievement write with a strictly increasing revision, so the store's upsert-if-better comparison always recognizes the newest write as the winner.

Inheritance

object

AchievementRevisionClock

Inherited Members

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

Namespace: Serenity.Achievements.Domain.Services

Assembly: Serenity.Achievements.Domain.dll

Syntax

public static class AchievementRevisionClock

Remarks

Wall-clock ticks alone are not enough: two writes inside the same tick, or a clock that steps backwards, would both produce a revision the store refuses. Taking the larger of "one past the last known revision" and "now" keeps the sequence monotonic under either condition while still reading as a timestamp in the common case.

Methods

Next(long, long)

Returns the next revision to stamp a write with.

Declaration

public static long Next(long lastKnownRevision, long utcNowTicks)

Parameters

Type	Name	Description
long	lastKnownRevision	The revision the row currently carries, or zero when it is new.
long	utcNowTicks	The current UTC time in ticks.

Returns

Type	Description
long	A revision strictly greater than lastKnownRevision.