How do forwarded pictures send so fast? (sh.itjust.works)

submitted 1 year ago by FlagonOfMe@sh.itjust.works to c/signal@lemmy.ml

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How does it work that I send 11 high quality photos to one person and it takes 5 minutes to send because I have a weak cell signal, but when I forward that message to another user it's nearly instantaneous?

I thought no messages were saved on the server, so how can it be so fast to forward them? Doesn't it have to upload the photos all over again?

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this post was submitted on 10 Jul 2023

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