feat: 实现字典管理后端

tests/TakeoutSaaS.Integration.Tests/Fixtures/TestDictionaryHybridCache.cs

@@ -0,0 +1,46 @@
+using System.Collections.Concurrent;
+using TakeoutSaaS.Application.Dictionary.Abstractions;
+using TakeoutSaaS.Domain.Dictionary.Enums;
+
+namespace TakeoutSaaS.Integration.Tests.Fixtures;
+
+public sealed class TestDictionaryHybridCache : IDictionaryHybridCache
+{
+    private readonly ConcurrentDictionary<string, object> _cache = new(StringComparer.OrdinalIgnoreCase);
+
+    public async Task<T?> GetOrCreateAsync<T>(
+        string key,
+        TimeSpan ttl,
+        Func<CancellationToken, Task<T?>> factory,
+        CancellationToken cancellationToken = default)
+    {
+        if (_cache.TryGetValue(key, out var cached) && cached is T typed)
+        {
+            return typed;
+        }
+
+        var value = await factory(cancellationToken);
+        if (value is not null)
+        {
+            _cache[key] = value;
+        }
+
+        return value;
+    }
+
+    public Task InvalidateAsync(
+        string prefix,
+        CacheInvalidationOperation operation = CacheInvalidationOperation.Update,
+        CancellationToken cancellationToken = default)
+    {
+        foreach (var key in _cache.Keys)
+        {
+            if (key.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
+            {
+                _cache.TryRemove(key, out _);
+            }
+        }
+
+        return Task.CompletedTask;
+    }
+}