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If your node relays the transaction to your peers it can stay in the mempool indefinitely.
If one single node in the entire world decided to use a different setting for purging old transactions, a valid transaction could be resubmitted to the mempool at any time and make it into a block.
My longest time to confirm was about two months.
I get so nervous that I fucked up every time I do it that I literally watch the mempool until a block confirms.
2 months would kill me
It's good for you, you should try it sometime. 😄
Dying? I'll take it under consideration 😁
good point
Interesting. I thought it could just get stuck until it cleared....
You learn something new every day, and usually several times a day on SN
my bitcoin.conf has: mempoolexpiry=336, which is only 2.3 days?! I don't remember setting that.....
I think official bitcoin node has a config setting to only keep 2 weeks (specified in blocks)....
the sender would initially see a "pending..." message in their client software and then after its removed see a "expired" or maybe "failed" message letting them know to resubmit.