AzureTableStorageCache.cs

public class AzureTableStorageCache : IDistributedCache
    {
        private readonly AzureTableStorageCacheOptions _options;
        private readonly CloudTable _table;

        public AzureTableStorageCache(IOptions<AzureTableStorageCacheOptions> options)
        {
            _options = options.Value;

            var tableClient = CloudStorageAccount.Parse(_options.ConnectionString).CreateCloudTableClient();
            _table = tableClient.GetTableReference(_options.TableName);
            _table.CreateIfNotExists();
        }

        public byte[] Get(string key) =>
            GetAsync(key).Result;

        public async Task<byte[]> GetAsync(string key, CancellationToken token = default)
        {
            var result = await _table.ExecuteAsync(TableOperation.Retrieve<CachedItem>(_options.PartitionKey, key), token);
            var item = result.Result as CachedItem;
            if (item.IsExpired)
            {
                await RemoveAsync(key, token);
                return null;
            }
            return item?.Data;
        }

        public void Refresh(string key) =>
            RefreshAsync(key).Wait();

        public Task RefreshAsync(string key, CancellationToken token = default) =>
            Task.CompletedTask;

        public void Remove(string key) =>
            RemoveAsync(key).Wait();

        public Task RemoveAsync(string key, CancellationToken token = default) =>
            _table.ExecuteAsync(TableOperation.Delete(new CachedItem(_options.PartitionKey)
            {
                RowKey = key,
                ETag = "*"
            }), token);

        public void Set(string key, byte[] value, DistributedCacheEntryOptions options) =>
            SetAsync(key, value, options).Wait();

        public Task SetAsync(string key, byte[] value, DistributedCacheEntryOptions options, CancellationToken token = default) =>
            _table.ExecuteAsync(TableOperation.InsertOrReplace(new CachedItem(_options.PartitionKey)
            {
                RowKey = key,
                ETag = "*",
                Data = value,
                AbsoluteExpiration = options.AbsoluteExpiration
            }), token);