Mempool
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A memory pool is simply a "waiting room" that holds the unconfirmed transactions.
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One of the most prominent uses of the Mempool is to get pending transactions.
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When a node receives a transaction, it will propagate the transaction to peer nodes until a farmer approves the transaction and adds it to a new block.
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As the transaction move from mempool to the farmers, they are sorted and processed according to profitability.
1. Mem size
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It is the number of transactions in mempool to,that is to be processed.
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A high mempool size indicates more network traffic which result in higher priority fees.
2. Mem fee
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It shows how much people paying for the transaction.
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If mempool is not full, It will accept all transactions regardless of fees.
3. Min fee
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It is the minimum relay fee for the mempool when the mempool gets too big.
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When mempool becomes full it will start rejecting or it will not accept any more transactions.
4. Addition
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It is the total number of mempool added to the queue.
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After a new block added to the blockchain, all full nodes check out the coins that are spent and remove them from mempool.