src/MassTransit/Caching/CacheSettings.cs - develop - vshmidt/masstransit

src/MassTransit/Caching/CacheSettings.cs

58 строк2 KB

Chris Patterson

Integration of all external packages into MassTransit, split out into Abstractions, Middleware, and the core MassTransit assembly.

22 янв 2022, 18:24

22 янв 2022, 18:24b5b4f50

namespace MassTransit.Caching
{
    using System;


    public class CacheSettings
    {
        public CacheSettings(int capacity = 10000, TimeSpan? minAge = default, TimeSpan? maxAge = default, CurrentTimeProvider nowProvider = default)
        {
            Capacity = capacity;

            MinAge = minAge ?? TimeSpan.FromMinutes(1);
            MaxAge = maxAge ?? TimeSpan.FromHours(24);

            NowProvider = nowProvider ?? CurrentTime;

            BucketCount = 20;
            TimeSlots = 240;
        }

        /// <summary>
        /// The number of items allowed in the cache. This isn't a hard limit, but the cache will shrink
        /// the cache size to be under the capacity when possible.
        /// </summary>
        public int Capacity { get; set; }

        /// <summary>
        /// The maximum length of time an unused item will remain in the cache
        /// </summary>
        public TimeSpan MaxAge { get; set; }

        /// <summary>
        /// The minimum length of time an item will remain in the cache before it is eligible for removal
        /// </summary>
        public TimeSpan MinAge { get; set; }

        /// <summary>
        /// Provides the current time, which is used to manage item lifetime. Replace this to allow unit
        /// tests to move time forward quickly.
        /// </summary>
        public CurrentTimeProvider NowProvider { get; set; }

        /// <summary>
        /// The number of buckets to create per time slot (do NOT change this unless you're very smart)
        /// </summary>
        public int BucketCount { get; set; }

        /// <summary>
        /// The number of time slots per bucket (do NOT change this unless you're very smart)
        /// </summary>
        public int TimeSlots { get; set; }

        static DateTime CurrentTime()
        {
            return DateTime.UtcNow;
        }
    }
}