I have not written real code for a very long time, and I don’t know the lemmy code base at all… but I described this bug to GPT-4 and it just turned me on to idempotency.

https://stripe.com/blog/idempotency

The call could succeed, but the connection breaks before the server can tell its client about it.

Seems like it’s non-trivial to implement in rust.

https://www.lpalmieri.com/posts/idempotency/

Just to add to this, at least in wefwef, I sometimes get an error when I tap Post, saying that it failed. I am then left on the page, and can hit Post again. But it didn’t fail the first time, the post was made.

So this is not just users being impatient. There is a bug.

This brings up my main questions with mastodon and lemmy… who is going to pay the server costs at scale?

It would be nice if those mechanisms began sooner than later.