FWCacheKeychain


@interface FWCacheKeychain : FWCacheEngine

Keychain缓存


                    
                    
                    sharedInstance

单例模式

Objective-C

@property (class, nonatomic, readonly) FWCacheKeychain *_Nonnull sharedInstance;


                    
                    
                    -initWithGroup:

分组对象

Objective-C

- (nonnull instancetype)initWithGroup:(nullable NSString *)group;