使用 HybridCache 混合缓存库

src/HelloShop.BasketService/Repositories/BasketRepository.cs

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+// Copyright (c) HelloShop Corporation. All rights reserved.
+// See the license file in the project root for more information.
+
+using HelloShop.BasketService.Entities;
+using Microsoft.Extensions.Caching.Distributed;
+using Microsoft.Extensions.Caching.Hybrid;
+using System.Threading;
+
+namespace HelloShop.BasketService.Repositories
+{
+    public class BasketRepository(HybridCache cache) : IBasketRepository
+    {
+        private const string BasketKeyPrefix = "basket";
+
+        private static string GetBasketKey(int customerId) => $"{BasketKeyPrefix}:{customerId}";
+
+        public async Task DeleteBasketAsync(int customerId, CancellationToken cancellationToken = default) => await cache.RemoveAsync(GetBasketKey(customerId), cancellationToken);
+        
+        public async Task<CustomerBasket?> GetBasketAsync(int customerId, CancellationToken cancellationToken = default)
+        {
+            return await cache.GetOrCreateAsync(GetBasketKey(customerId), async cancel => await Task.FromResult<CustomerBasket?>(default), cancellationToken: cancellationToken);
+        }
+
+        public async Task<CustomerBasket?> UpdateBasketAsync(CustomerBasket basket, CancellationToken cancellationToken = default)
+        {
+            HybridCacheEntryOptions options = new()
+            {
+                Expiration = TimeSpan.MaxValue,
+                LocalCacheExpiration = TimeSpan.FromMinutes(5),
+            };
+
+            await cache.SetAsync(GetBasketKey(basket.BuyerId), basket, options, cancellationToken: cancellationToken);
+
+            return await GetBasketAsync(basket.BuyerId, cancellationToken);
+        }
+    }
+}