For protocols involving challenges or revealing an old off-chain transaction, it is crucial that user can bump the fee to ensure the transaction gets commit on time.
UTXO transactions are hard to management because of the many-to-many dependencies. Fortunately, we can learn the experiences from Bitcoin. Base on the survey, I have propose the fee bumping mechanism for CKB and the corresponding guideline for transactions generators.
The two articles are still in the very early stage, any changes suggestions and new ideas are welcome.