Replace-by-fee (RBF) and Child Pays For Parent (CPFP)- While these don’t directly result in lower fees, they are each strategies by which transactions that are stuck can be “bumped” in priority by paying a higher fee. These can be leveraged to “test” the fee market and if a transaction gets stuck, you can bump it later on. You can learn more about RBF here and CPFP here.
A problem is that many wallets do not support RBF yet, or people are using them without enabling RBF (if RBF signaling is not the default). So to be prepared for a day when fees rise (i.e., a fee market returns), ensure your are using a wallet that supports Replace-by-fee (RBF), and if you are not, consider switching!
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Fortunately, fees have been surprisingly low, since near the time that article was composed. But it doesn't mean fees won't rise again as bitcoin continues to gain traction.
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