this post was submitted on 30 Oct 2025
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Delta chat criticism against Signal (piefedimages.s3.eu-central-003.backblazeb2.com)
submitted 1 month ago by Blaze@piefed.zip to c/privacy@programming.dev
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[–] pupbiru@aussie.zone 48 points 1 month ago* (last edited 1 month ago) (6 children)

this seems needlessly combative… prevailing opinions are exactly as signal says… think differently? great! let’s do it, talk about it, see how it goes, and when the solution has scaled in the real world to what it’s competing against then you can feel superior as the one that had the vision to see it

but scaling is hard, and distributed tech is hugely inefficient

there are so many unknowns

anyone can follow a random “getting stared with web framework X” guide to make a twitter clone… making a twitter clone that handles the throughput that twitter does, that takes legitimately hard computer science (fuck twitter, but it remains both a good and common example)

heck even lemmy has huge issues with sync at its current tiny scale when there’s any reasonable latency involved… i remember only months ago when aussie.zone was getting updates days late because of a 300ms latency to EU/US and lemmys sequential handling of outboxes (afaik)

[–] entwine@programming.dev 2 points 1 month ago (3 children)

but scaling is hard, and distributed tech is hugely inefficient

How is it inefficient for a chat app? If anything, a distributed architecture is the ideal for this use case. It's only potentially a problem if you need to have huge group chats, which is definitely not the common use case for a chat app, but even then I think Delta Chat's optimized relays can handle that.

see how it goes, and when the solution has scaled in the real world to what it’s competing against then you can feel superior as the one that had the vision to see it

Delta chat uses existing email infrastructure, which has already proven its ability to scale. Nigerian princes probably send more emails per hour than the entire global Signal network.

[–] sukhmel@programming.dev 2 points 1 month ago (2 children)

I'm guessing inefficient in a sense that with distributed you need more computational power in total than with centralised

[–] entwine@programming.dev 3 points 1 month ago

Idk what to say to this. Is it true? I don't know, and you probably don't either. That's a weird way to look at it and I doubt anyone has measured the power costs of the global email network.

It's also useless for decision-making. What matters is a question like "how much would it cost me to host a server and contribute to the network?". Even if the total global cost is billions of dollars, the network will continue to grow because nobody has to pay all of it.

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