Data Aggregation Latency
Data aggregation latency refers to the time delay that occurs while a system collects, processes, and averages price information from multiple oracle sources before it is updated on the blockchain. In high-frequency trading or volatile crypto markets, even a few seconds of delay can lead to stale price data, causing discrepancies between the actual market price and the price used for liquidation.
This latency is a function of network congestion, the number of oracle nodes involved, and the complexity of the consensus algorithm. If the latency is too high, traders may exploit the gap between the on-chain price and the true market price through arbitrage.
Reducing this latency is a constant engineering challenge, requiring a balance between speed, decentralization, and security. Protocols must manage this risk by adjusting liquidation thresholds or implementing circuit breakers.