What is Mempool? A Guide for Crypto-beginners – ALTCOIN MAGAZINE

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Pay a higher transaction fee in order to efficiently shift your transaction from the mempool to the blockchain.

There is a limited size for each mempool, thus a limited number of transactions can be stored in each mempool. If new transactions arrive faster than the rate of clearing the old ones, it will lead to “traffic congestion” and costing more time for transactions to be verified and processed.

The size or the unit or memory of a node’s mempool is represented as megabyte (MB).

All the transactions inserted to the block will be removed from its mempool, as long as the miner mined a block to contain those transactions.

Therefore, most transactions in a 3MB mempool are required to wait for at least one or two blocks before they are confirmed. Taking the theoretical block size limit of Bitcoin (which is 1 MB) for instance.

This brings us to a frequently asked question — How can I speed up the time it takes to pick my transaction from the mempool?

Pay a higher transaction fee. In a mempool, it is not uncommon to have thousands of pending transactions. Since miners receive payments in terms of crypto for each transaction they mined and they want to maximize their earnings, the best way to incentivize the miner to include your transaction with priority is to pay a higher transaction fee or gas fee if using the Ethereum network. (What is gas fee?)

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