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semisol | 4 months ago (raw) | root | parent | reply | flag 
 also consider you may be doing caching wrong 

wtf are you storing the original image for? resize and optimize it
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Vitor Pamplona | 4 months ago (raw) | root | parent | reply | flag 
 I want a centralized server scaling images. The scaling happens on the phone, but only after the full download.
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Vitor Pamplona | 4 months ago (raw) | root | parent | reply | flag 
 * don't want.
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semisol | 4 months ago (raw) | root | parent | reply | flag 
 I said just that
Download image, resize, cache for further use the smaller version
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Vitor Pamplona | 4 months ago (raw) | root | parent | reply | flag 
 I have tried that. It doesnt work. 

Amethyst requires many image sizes, including the original size. Even without the original size, rescaling for all sizes the app can use takes more space than just keeping the original.
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semisol | 4 months ago (raw) | root | parent | reply | flag 
 For profile pictures you do not need the original size usually.

Have a proper cache with mixed LRU/LFU and store 2 sizes: the original, and a smaller optimized version that can be on-demand scaled down to whatever you need.
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Vitor Pamplona | 4 months ago (raw) | root | parent | reply | flag 
 It's funny that you think I don't have a proper cache even though I use state of the art caching system.
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Vitor Pamplona | 4 months ago (raw) | root | parent | reply | flag 
 Also, scaling is not an issue since most Gif pictures are close to the size on the screen. The real culprit is the animation and the time of the gif.
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semisol | 4 months ago (raw) | root | parent | reply | flag 
 can we just stop having GIFs and use APNG and/or normal video files