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.
Lego DeFi e componibilità del protocollo su Ethereum ed L2. Principali protocolli per catena: Aerodrome on Base, GMX/Pendle su Arbitrum, Velodrome on Optimism, oltre alle primitive della mainnet (Uniswap, Aave, Compound, Curve). Come funzionano, come sfruttarli e come combinarli. Da utilizzare quando si creano integrazioni DeFi, si scelgono protocolli su uno specifico L2, si progettano strategie di rendimento o si compongono protocolli esistenti in qualcosa di nuovo. Fonte: austintgriffith/ethskills.