using Polly.Utilities; using System; namespace Polly.Caching { public abstract class NonSlidingTtl : ITtlStrategy { protected readonly DateTimeOffset absoluteExpirationTime; protected NonSlidingTtl(DateTimeOffset absoluteExpirationTime) { this.absoluteExpirationTime = absoluteExpirationTime; } public Ttl GetTtl(Context context) { TimeSpan timeSpan = absoluteExpirationTime.Subtract(SystemClock.DateTimeOffsetUtcNow()); return new Ttl((timeSpan > TimeSpan.Zero) ? timeSpan : TimeSpan.Zero, false); } } }