Learn SOLIDITY with Real Code Examples
Updated Nov 19, 2025
Architecture
Compiles to Ethereum Virtual Machine bytecode
Smart contracts deployed to blockchain storage
Execution triggered by transactions or calls
State changes stored on-chain
Gas model governs computation & storage
Rendering Model
Solidity code -> solc compiler
Bytecode deployed to blockchain
Executed by EVM
State written to on-chain storage
Transactions trigger contract functions
Architectural Patterns
Factory pattern
Proxy/upgradable pattern
Ownable & role-based access
Pull-payment pattern
Reentrancy-safe design
Real World Architectures
DEXs & AMMs
Lending protocols
NFT marketplaces
Gaming smart contracts
Enterprise Ethereum chains
Design Principles
Deterministic execution
Transparent and immutable logic
Gas-efficient patterns
Security-focused architecture
Contract modularity
Scalability Guide
Use Layer 2 deployments
Batch operations
Reduce storage writes
Use events instead of state
Modularize & split logic
Migration Guide
Refactor old Solidity <0.6 contracts
Update to new error handling
Move to proxy pattern for upgrades
Optimize gas-heavy storage logic
Replace deprecated syntax