what is the difference ? about glidebitmappool HOT 8 CLOSED

@Override
public void applyOptions(Context context, GlideBuilder builder) {
    // Apply options to the builder here.
    builder.setDiskCache(new InternalCacheDiskCacheFactory(context, 10 * 1024));//设置使用InternalCacheDiskCacheFactory磁盘高速缓存的大小
    //builder.setDiskCache(new InternalCacheDiskCacheFactory(context, cacheDirectoryName, yourSizeInBytes));//设置磁盘高速缓存的位置
    //builder.setDiskCache(new ExternalCacheDiskCacheFactory(context, cacheDirectoryName, yourSizeInBytes));//缓存在sd卡上公共缓存目录
    builder.setMemoryCache(new LruResourceCache(10 * 1024));//设置大小和/或实现你希望使用内存缓存
    //builder.setBitmapPool(new LruBitmapPool(10 * 1024));
    //统一本地图片和网络图片的BitmapPool
    builder.setBitmapPool(GlideBitmapPool.getInstance().getBitmapPool());
    builder.setDecodeFormat(DecodeFormat.PREFER_RGB_565);
}

@Override
public void registerComponents(Context context, Glide glide) {
    // register ModelLoaders here.
}