Blockchain 101: Transaction lifecycle & the mempool
Zero Knowledge
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Is There a Global Mem Pool?
Every node in network has its own mem pool and it's like this subjective view of all the transactions that they have seen. So we try to never send that transaction twice if we know that that peer already received that transaction from us. We don't really like propagate it back because it doesn't make any questions. Although randomly we also choose peers that we kind of forget that we propagated the transactions to them to just keep the transactions flowing.
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