I've been pondering the fact that Nano (which promotes itself as "feeless") has no built-in mechanism for allocating tx bandwidth in the event of congestion.
BCH has this in the form of miner fees, but it raises a question for me. Given the emphasis on zero-conf payments and the absence of any explicit replace-by-fee mechanism, what would actually happen in the event that the BCH chain became congested?
Obviously we would try to increase the block size and add capacity before the congestion hit, but as Peter Rizen pointed out, there are physical constraints on bandwidth available for block propagation. Capacity can never be infinite, so a market of fees bidding for scarce block space is always a possibility, since miners will self-impose a maximum block size that they will try to mine, lest they increase their rate of orphaned blocks.
So then, in the event of congestion, how are BCH miners expected to interact with the fee market, since there is no explicit replace-by-fee?
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source https://www.reddit.com/r/btc/comments/e6uyj6/how_would_bch_respond_to_congestion/
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