Questions on: mempool

The latest versions of our wallet now use a dynamic fee structure (which you can read about here) to determine appropriate fees for your transactions, so some of the information in this post no longer applies. If you have a pending transaction that i
What happens if I don’t attach any fees to my bitcoin transaction? Before transactions get packaged into blocks and inserted into the blockchain they wait around in the transaction pool, also known as the memory pool (or mempool for short). Each tran
A large part of those transactions only needs to be kept for a limited time, in the order of 10 minutes. Once transactions are in a block they are removed from the mempool and the whole block is written to disk. However while the transactions are in
No, miners do not need the entire block chain to be accessible. Technically, they don't even need it at all. The blocks themself are only needed for rescanning wallets, reorganisations, and serving blocks to other nodes
So a node that creates a transaction needs to propagate it. It will connect to other nodes. Usually to some reasonable number like 8 nodes (please see getpeerinfo on your client)
As of Bitcoin Core 0. 12. 0, these are the ways a transaction can leave the mempool: The node was restarted (we don't save the mempool on disk)
A large part of those transactions only needs to be kept for a limited time, in the order of 10 minutes. Once transactions are in a block they are removed from the mempool and the whole block is written to disk. However while the transactions are in
This is an interesting problem, one that has been studied and discuss within the bitcoin community quite a bit. The basic way to do this is to keep track of a normalized TXID alongside of the actual TXID used in the protocol. Then to calculate the no
Memory Structures and Processes Yea, from the table of my memory I'll wipe away all trivial fond records. Shakespeare: Hamlet This chapter discusses the memory structures and processes in an Oracle database system. It includes: An Oracle Instance Reg