Blockchain 101: Transaction lifecycle & the mempool

In this episode, we are joined by https://twitter.com/tomusdrw (Tomasz Drwięga), a Core Developer at Parity Technologies, to discuss the lifecycle of a transaction on the Ethereum network and how the mempool works. We will be covering the following topics: What a mempool/transaction queue/transaction pool is. How a transaction reaches a mempool and what the mempool does with it. Looking at what causes the CPU increase and delays in the network. What happens when a transaction gets stuck. Gossip. The security properties of the mempool. What a network attack could look like. Here are some additional links and ressources if you want to dig deeper. https://medium.com/blockchannel/life-cycle-of-an-ethereum-transaction-e5c66bae0f6e (https://medium.com/blockchannel/life-cycle-of-an-ethereum-transaction-e5c66bae0f6e) https://blog.infura.io/when-there-are-too-many-pending-transactions-8ec1a88bc87e (https://blog.infura.io/when-there-are-too-many-pending-transactions-8ec1a88bc87e) https://etherscan.io/txsPending (https://etherscan.io/txsPending) https://en.wikipedia.org/wiki/Gossip_protocol (https://en.wikipedia.org/wiki/Gossip_protocol) https://github.com/ethereum/wiki/wiki/Ethereum-Wire-Protocol (https://github.com/ethereum/wiki/wiki/Ethereum-Wire-Protocol)