Historical retrospective · DeFi

Uniswap v2 expanded token-pair routing and flash swaps

Uniswap v2 added direct token pairs, oracle improvements and flash swaps that let contracts receive assets and repay within one transaction.

Event / milestone year: 2020First published

The design enabled composable applications to build more complex operations around a single atomic transaction.

The release helped make DEX liquidity a reusable building block across DeFi.

Atomicity limits some settlement risk but does not protect against bad pricing, faulty integrations or malicious contracts.

Primary source

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Uniswap v2 documentation ↗