using System.Threading.Tasks;

using System.Runtime.Serialization.Json;

using System;

using System.Collections.Generic;

using System.Runtime.Caching;

using System.Text.Json;

​

namespace memcache {

    class Program {

​

        static async Task Main(string[] args) {

            Create();

            var people = (List<string>)_cache.Get("people");

            Console.Out.WriteLine(JsonSerializer.Serialize<List<string>>(people));

            await Check(4);

            await Check(7);

        }

        static async Task Check(int secondsToWait) {

            await Task.Delay(TimeSpan.FromSeconds(secondsToWait));

            var people2 = (List<string>)_cache.Get("people");

            if (people2 == null) {

                Console.Out.WriteLine("IsNull");

            } else {

                Console.Out.WriteLine(JsonSerializer.Serialize<List<string>>(people2));

            }

        }

        private static MemoryCache _cache = MemoryCache.Default;

        // private static MemoryCache _cache = new MemoryCache("PeopleCache");

​

        static void Create() {

            var people = new List<string>();

​

            // Add some generic values

            people.Add("Patrict Stewart");

            people.Add("Brent Spiner");

            people.Add("Jonathon Frakes");

            people.Add("Marina Sirtus");

            people.Add("Gates McFadden");

            people.Add("Michael Dorn");

            people.Add("LeVar Burton");

            people.Add("Wil Wheaton");

            people.Add("Denise Crosby");

            people.Add("Majel Barrett");

            people.Add("Colm Meaney");

            people.Add("Whoopi Goldberg");

            people.Add("John Di Lancie");

            people.Add("Diana Muldaur");

​

            // Set up a cache policy

            CacheItemPolicy policy = new CacheItemPolicy { AbsoluteExpiration = DateTimeOffset.Now.AddSeconds(10) };

​

​

            _cache.Set("people", people, policy);

        }

    }

}

​