Gas Optimizer

Use EIP-1559 type 2 transactions for predictable fees

Batch multiple transfers in one transaction

Use Multicall contracts for reading data

Pack storage variables into single slots (< 32 bytes each)

Use events instead of storage for historical data

Use uint256 instead of smaller uints (EVM pads to 256)

Use calldata instead of memory for read-only function args

Avoid zero-to-nonzero storage writes (cold SSTORE = 20k gas)

Use immutable/constant for values set once

Use short-circuit evaluation in boolean conditions