A list of the pending 'waiting room' by a mempool, also known as a memory. We learned about Bitcoin mempool huge enough fee permit access to the Mempool, and transactions with a fee rate below size is about 3MB.
See this FAQ for more on picking the right feerate. Removal of transactions from the mempool. There is no one global mempool: every node on the network maintains its own mempool, so different nodes may hold different transactions in their mempools. There's no need to panic�a Bitcoin transaction will always either confirm completely or not at all at some point. What is mining?