# InMemoryCacheOptions

```csharp
/// <summary>
/// In-Memory cache options
/// </summary>
public class InMemoryCacheOptions
{
    /// <summary>
    /// Sets system clock
    /// </summary>
    public ISystemClock Clock { get; set; }

    /// <summary>
    /// Gets or sets the minimum length of time between successive scans for expired items.
    /// Default value is 60 seconds
    /// </summary>
    public int ExpirationScanFrequencyInSeconds{ get; set; } = 60;

    /// <summary>
    /// Gets or sets the maximum size of the cache.
    /// Default value is null.
    /// </summary>
    public ulong? SizeLimit { get; set; }

    /// <summary>
    /// Gets or sets the amount to compact the cache by when the maximum size is exceeded.
    /// Value must be between 0 and 1.
    /// Default value is 0.05
    /// </summary>
    public double CompactionPercentage { get; set; }

    /// <summary>
    /// Gets or sets whether to track memory cache statistics.
    /// Disabled by default (false).
    /// </summary>
    public bool TrackStatistics { get; set; }

    /// <summary>
    /// Gets or sets whether to track linked entries.
    /// Disabled by default (false).
    /// </summary>
    /// <remarks>Prior to .NET 7 this feature was always enabled.</remarks>
    public bool TrackLinkedCacheEntries { get; set; }
}
```


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