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当使用图形上下文进行图片绘制的时候，如果图片像素比较大，那么内存会很好，即使最后关闭图形上下文，内存也不会降低，求解
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我猜测是寄宿图被缓存了。你试试将view.layer设成casharplayer.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
我猜测是寄宿图被缓存了。你试试将view.layer设成casharplayer.