image cache service

image cache service

圖牀

https://images.weserv.nl/

https://github.com/weserv/images

meta & referrer

demo

<img src="https://img1.doubanio.com/view/ark_article_cover/retina/public/55712959.jpg?v=1536826763.0" alt="">

防盜鏈 / 防下載

image / video 防盜鏈策略

refs

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/meta

https://wiki.whatwg.org/wiki/Meta_referrer

https://www.freebuf.com/news/57497.html

https://blog.mythsman.com/post/5d2c153067f841464434a42a/

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