Deri Protocol adopts the pull model of Oracle. The pull model is a new approach to price oracles that eliminates transaction costs paid by the oracle and data providers, which enables it to scale in ways that traditional push oracles cannot. In a pull model, the oracle does not push data to the blockchain, but instead waits for the blockchain to request data. This reduces the amount of data that needs to be pushed to the blockchain, which in turn reduces the transaction costs. Deri Protocol uses a pull model for its oracles, which allows users to pull prices on-chain only when they are needed. This new oracle design improves on existing oracles by eliminating transaction costs paid by the oracle and data providers, which enables it to scale in ways that traditional push oracles cannot. Another advantage of the pull model is that the price is updated when used, which avoids the transaction-front-run issue of push-model oracles.
Deri Protocol employs Oraclum and Pyth oracles to guarantee precision and stability in pricing for derivatives trading. The primary aim of this approach is to safeguard against front-running, ensuring a fair and reliable trading environment.