DeFi TVL: Ethereum DeFi TVL is $50B+ (Feb 2026). If you're quoting numbers from 2023-2024, they're stale.
Uniswap V4 is live. Launched mainnet January 31, 2025 on 10+ chains. V4 introduced a hooks system — custom logic attached to pools (dynamic fees, TWAMM, limit orders, custom oracles). This is the biggest composability upgrade since flash loans. PoolManager addresses are different per chain (NOT deterministic like V3).
Costs changed everything: A flash loan arbitrage on mainnet costs $0.05-0.50 in gas now (was $5-50). This opens composability patterns that were previously uneconomical.
Legos DeFi y componibilidad de protocolos en Ethereum y L2. Protocolos principales por cadena: Aerodrome en Base, GMX/Pendle en Arbitrum, Velódromo en Optimism, además de primitivas de la red principal (Uniswap, Aave, Compound, Curve). Cómo funcionan, cómo aprovecharlos y cómo combinarlos. Úselo al crear integraciones DeFi, elegir protocolos en una L2 específica, diseñar estrategias de rendimiento o componer protocolos existentes en algo nuevo. Fuente: austintgriffith/ethskills.