Ethereum Storage Slots: Packed vs Unpacked Struct Gas Costs
How Solidity packs struct variables into 32-byte storage slots, why layout order determines your gas bill, and what the tradeoffs actually look like.
№ 002EthereumEthereum Storage Slot Packing and Gas Costs Explained
How Ethereum's 32-byte slot packing rules determine whether reading a struct costs 200 gas or 2,100. The mechanic, with worked examples.