Lightning Network vs Mempool

Lightning Network is Bitcoin's primary Layer 2 scaling solution that enables instant, low-cost payments through off-chain payment channels, processing thousands of transactions per second while inheriting Bitcoin's security by periodically settling on the Bitcoin blockchain.

Mempool (memory pool) is the waiting area where pending Bitcoin transactions sit after being broadcast to the network but before being included in a block, with miners selecting transactions offering the highest fees to maximize their revenue.