What Is the Concept of “Liveness” in the Context of an Oracle’s Price Feed?

Liveness refers to the ability of the Oracle network to continuously and promptly provide price updates to the smart contract, especially during periods of high network congestion or market volatility. A "liveness failure" means the price feed stops updating, causing the smart contract to rely on a stale price, which halts liquidations and settlements and exposes the protocol to potential insolvency or manipulation.