- The mempool is part of a node infrastructure where all the unconfirmed (not yet put into a block) but verified (big enough UTXOs?) transactions stay until a miner adds them to a block.
- The mempool will become bigger and transaction confirmations will take longer.
- The validation of a transaction gets longer because miners always go for the highest transaction fees first. This increases the fees for each transaction.
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What is the mempool?
A mempool is a holding area for pending transactions which are waiting to be added to the blockchain by the miners.
What happens if the miners can’t keep up with the rate of the new transaction?
The mempool grows larger and there are longer transaction times.
How does a growing mempool effect transaction fees?
If the mempool grows, the miners will go for transactions with higher fees first which will make the transactions with the lower fees to take longer.
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- What is the mempool?
A mempool functions as a temporary memory pool in a Node’s system for unconfirmed data which hasn’t yet been confirmed/added to the blockchain by a miner
- What happens if the miners can’t keep up with the rate of the new transaction?
When miners have too many transactions to process, competition for processing begins. Fees for processing increases because minors become more selective about processing transactions in the hopes of processing the transactions with the highest fee.
- How does a growing mempool effect transaction fees?
A growing mempool means there are many unconfirmed transactions which means competition for processing increases and therefore fees for processing increase.
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- What is the mempool? a pool of unconfirmed transactions.
- What happens if the miners can’t keep up with the rate of the new transaction? The mempool grows.
- How does a growing mempool effect transaction fees? It sucks…transactions sit in the mempool as miners cherry pick higher gas fees transactions which then forces people to use higher gas fees to get their transactions through.
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- The mempool is a list of unconfirmed transactions waiting to be added to blockchain.
- Transaction time increases.
- Miners who essentially add the transactions to the blockchain will prioritize those offering higher fees. So if there are more transactions the waiting time will be longer for transactions with lower fees
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1. What is the mempool?
The mempool is a temporary storage space where all unconfirmed transactions sent to the
network is stored. This mempool in turn is used by miners to get available transactions
that they can add to block, that they can then add to to the blockchain.
Once the miner appended the block, the transactions that were included in the block
is then removed from the mempool, as they are now confirmed on the blockchain.
2. What happens if the miners can’t keep up with the rate of the new transaction?
The number of transactions in the mempool will continue to increase, which will result
in unconfirmed transaction taking longer to be confirmed, decreasing the overall network
speed, meaning that the blockchain network becomes less efficient, especially for
transactions with a low transaction fees, since miners will in most cases process transactions
with the highest transaction fees first, for obvious reasons.
3. How does a growing mempool affect transaction fees?
Due to miners rather including transactions with high transaction fees to their block
in order to receive the most sats/B for their work, it will require that new transactions
being added to the mempool is done so with a higher transaction fee (depending on urgency)
to increase the chance of the transaction being included in the next mined block.
The transaction fees do not necessarily have to be increased if the miners are not able
to keep up with a growing mempool, but if all transaction fees are the same for every
single unconfirmed transaction, the network will become “sluggish” and the users will have
to be patient and wait for all of the transactions to eventually get processed.
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- What is the mempool?
Mempool is unconfirmed transactions that are in the node network until a miner picks it up and adds it to a new block. - What happens if the miners can’t keep up with the rate of the new transaction?
Mempool will grow in size as more transactions are added and this would cause the confirmation of the transaction to take longer. - How does a growing mempool effect transaction fees?
If mempool gets bigger, the confirmation process will take longer and the miner will go for the higher transaction fee. So this might cause the transaction fees to rise as people who want their transactions to be processed faster will set a higher fee.
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1.A full (pool) of unconfirmed transactions
2.The mempool grows.
3.The more transaction the more fees grow
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- The mempool is a list of unconfirmed transactions.
- It will take more time to confirm transactions.
- It increases the transaction fees as the transactions with high fees are prefered by the miners
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What is the mempool?
List of all transactions that have been transmitted but not yet included in a block
What happens if the miners can’t keep up with the rate of the new transaction?
The mempool size increases and the fee bid in Sat/byte necessarily goes up for those whole want their transaction included in the next block or in a near future block.
How does a growing mempool effect transaction fees?
Fees go UP - like uber surge rates to get a ride during a peak in demand. While the amount of hash can be unlimited the size of memory in each block is capped as per the consensus rules and the blocks per time is poison distributed and averages 10min so not extra blocks per unit time on average can be added to cram in more transactions therfore the back log will only go up while the demand on the network remains high meaning higher and higher fees untilfor whatever reason people decide to not send so much bitcoin around anymore (peak demands usually coincide with FOMO with new users wanting to buy bitcoin in a bull makret (seemingly every four years)
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- mempool is a list or database of all unconfirmed transactions (transactions not yet on the blockchain), shared by nodes/miners; each node has their own mempool and it is constantly updated and exchanged between nodes
- the mempool grows, new unconfirmed transactions are added and the transaction time grows; incentivised miners take the transactions with high fees so those usually get confirmed sooner, while others have to wait. the best times for transaction times are early morning hours when there are usually not a lot of transactions taking place
- when the mempool grows, transaction fees are the incentive for miners to prioritize those transactions, so they will get done quicker and people who want to have the transaction securely confirmed do pay the ‘premium’. also this increases competition in miners
The mempool is a part of the node structure where all unconfirmed transactions are stored.
The mempool gets larger and transactions take longer to process
The fees go up
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Miners don’t set any min fee. They prioritize transactions with the highest sat/byte ratio so they can earn as much as they can per block 
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This might be true for traditional banking, but there is always morning somewhere in the world 
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Yes you’r right. Thanks for the correction
Yes, but if the coinbase resides in the new block, and no new blocks are created after the 21st million, where does the transaction go, or where is it now recorded?
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the mempool is a log of transactions that are in the bitcoin network but have not been added to the blockchain by miners yet.
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& 3. A mempool backlog occurs and transaction fees increase.
Then more miners come into the space.
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What is the mempool?
Answer - upon successfully passing a “smell test” by a node the transaction is placed at the “waiting area” where all other unconfirmed transactions are being placed. This area is called mempool. -
What happens if the miners can’t keep up with the rate of the new transaction?
Answer - if the miner is not keeping up with the rate of new transactions inside the mempool (I believe this is the reference point in this question), the mempool could be saturated and it could lead to a significant back-log, that in turn would slow down the transaction speed. Also, under another scenario, miners potentially could increase the fee threshold and forgo all other low-fee based transactions eliminating/avoiding a bottle-neck. -
How does a growing mempool effect transaction fees?
Answer - growing mempool most likely will jack up transaction fees, as per my scenario in the previous question.
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that is very much true, but the graph in the video shows considerable ‘downtime’ during certain parts of the day, so one might be incentivized to either do their transactions in times of low ‘traffic’.
A question not addressed is, are any miners incentivized to take up transactions in the mempool that have extremely low fees? how long do transactions with small fees usually stay in the mempool before being taken up? what if there would be a transaction without a fee, would a miner even take it? like, a premium for the ‘weak’ transactions… or do they just stay until whenever someone deems them ripe for the taking?
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- A mempool is just a pool with all the unconfirmed transactions that have already been verified and make sense for the network. Miners will pick transactions up from the mempool and put them into the new block they want to broadcast and add to the blockchain.
- Miner with more probability will put into the new block those transactions with higher fees. This mean that some transaction with small fees should stay into the mempool as long as one miner will pick it up.
- More transactions into the mempool and higher fees we will have. Due to a limited space into the block (1MB for Bitcoin) miners will take only transactions with higher fees, thus in order to be take into account by miners one have to increase the payed fees.
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