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zhongwuzw
fb8ba3fe95
Summary: This is a re-submit of D13895627 which got landed but didn't include a fix to Instagram's code. The sheriffs were unsure how it got landed without running the build. Currently, before we store the image to cache, we only respect `Cache-Control`, actually, we also may need to check `Expires`、`Last-Modified`, refer to [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching#Freshness), and [okhttp](https://github.com/square/okhttp/blob/568a91c44a118b2c2ba62d310a331582c567b24a/okhttp/src/main/java/okhttp3/internal/cache/CacheStrategy.java#L268) respect the `MDN`, so in iOS, we can also respect this. [iOS] [Fixed] - Respect `MDN` cache strategy before cache the image. Reviewed By: shergin Differential Revision: D13896822 Pulled By: cpojer fbshipit-source-id: 8c1714f4a17ad40496146806cff3e188a60be93c