AsyncPhotoCache.swift

struct AsyncPhotoCache: AsyncPhotoCaching {
  private var storage: NSCache<NSString, UIImage>
  static let shared = AsyncPhotoCache(countLimit: 10)

  init(countLimit: Int) {
    self.storage = NSCache()
    self.storage.countLimit = countLimit
  }

  func store(_ image: UIImage, forID id: any Hashable) {
    let key = cacheKey(for: id, size: image.size)
    storage.setObject(image, forKey: key as NSString)
  }

  func image(for id: any Hashable, size: CGSize) -> UIImage? {
    let key = cacheKey(for: id, size: size)
    return storage.object(forKey: key as NSString)
  }
}