//配置缓存目录
public Builder cacheDirectory(File file);

//配置缓存文件命名规则
public Builder fileNameGenerator(FileNameGenerator fileNameGenerator) ;

//配置缓存文件大小
public Builder maxCacheSize(long maxSize) ;

//配置缓存文件数量
public Builder maxCacheFilesCount(int count) ;

public class App extends Application {

  private HttpProxyCacheServer proxy;

  public static HttpProxyCacheServer getProxy(Context context) {
    App app = (App) context.getApplicationContext();
    return app.proxy == null ? (app.proxy = app.newProxy()) : app.proxy;
  }

  private HttpProxyCacheServer newProxy() {
    return new HttpProxyCacheServer(this);
  }
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

  HttpProxyCacheServer proxy = getProxy();
  String proxyUrl = proxy.getProxyUrl(VIDEO_URL);
  videoView.setVideoPath(proxyUrl);
}

private HttpProxyCacheServer getProxy() {
  return App.getProxy(getApplicationContext());
}