解决了语音上传到问题，接下来要解决下载播放问题

Pods/Qiniu/QiniuSDK/Utils/QNCache.h

@@ -0,0 +1,48 @@
+//
+//  QNCache.h
+//  QiniuSDK
+//
+//  Created by yangsen on 2023/9/20.
+//  Copyright © 2023 Qiniu. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol QNCacheObject <NSObject>
+
+- (nullable NSDictionary *)toDictionary;
+
+- (nonnull id <QNCacheObject>)initWithDictionary:(nullable NSDictionary *)dictionary;
+
+@end
+
+
+@interface QNCacheOption : NSObject
+
+// 当 cache 修改数量到达这个值时，就会 flush，默认是 1
+@property (nonatomic, assign) int flushCount;
+// 缓存被持久化为一个文件，此文件的文件名为 version，version 默认为：v1.0.0
+@property (nonatomic,   copy) NSString *version;
+
+@end
+
+@interface QNCache : NSObject
+
++ (instancetype)cache:(Class)objectClass option:(QNCacheOption *)option;
+
+- (id <QNCacheObject>)cacheForKey:(NSString *)cacheKey;
+- (void)cache:(id<QNCacheObject>)object forKey:(NSString *)cacheKey atomically:(BOOL)atomically;
+
+- (NSDictionary <NSString *, id <QNCacheObject>> *)allMemoryCache;
+
+- (void)flush:(BOOL)atomically;
+
+- (void)clearMemoryCache;
+
+- (void)clearDiskCache;
+
+@end
+
+NS_ASSUME_NONNULL_END