⚡ Gas Optimization: Save Users Money
Learn advanced techniques to minimize gas costs
Your Progress
0 / 5 completed⚡ Why Gas Optimization Matters
Every operation in the EVM costs gas. Deploy an unoptimized NFT contract? Pay $500 in deployment fees. Let users mint with wasteful code? They pay $50+ per transaction when gas spikes to 200 gwei. Gas optimization isn't premature optimization—it's the difference between a usable dApp and an expensive failure. A single SSTORE costs 20,000 gas (vs 3 gas for memory). Loops that read storage can drain wallets. But with proper patterns—packed storage, caching, efficient loops—you can reduce costs by 50-90%. This module teaches battle-tested techniques from production contracts (Uniswap, Aave, OpenSea) that save millions in gas fees.
🎮 Interactive: Gas Cost Calculator
Select an operation and gas price to see real-world costs. Understanding these numbers is the first step to optimization.
📊 The Gas Cost Hierarchy
Storage is 6,600x more expensive than memory. Every optimization centers on avoiding unnecessary storage operations.
🎯 Real-World Impact
💡 What You'll Learn
- •Storage patterns: Packing variables, mappings vs arrays, memory caching techniques
- •Code optimization: Loop efficiency, short-circuiting, unchecked math, function modifiers
- •Advanced techniques: Assembly, calldata vs memory, bitmap tricks, proxy patterns
- •Profiling tools: Hardhat gas reporter, Foundry gas snapshots, eth-gas-reporter