Ether has an economic value and is being traded on exchanges. Ether is used as a crypto fuel to execute transactions on the Ethereum blockchain. In Solidity, each function execution consumes gas. The gas consumed is always paid in ether from the transaction initiator to the block miner. Higher gas consumption by a contract would need more ether; similarly, lower gas consumption would incur a lower amount of ether, and thus lowers the execution cost. Hence, it is always preferred to write the contract in such a way that it can consume the least amount of gas possible for the processing of each transaction.
One possible way to reduce gas consumption is to always deploy the contract with an enabled optimization flag. This process optimizes the EVM bytecode, which then consumes less gas.
We will discuss some of the patterns that can be used to reduce the...
