In on-chain application development, what is the most painful cost? It's not the difficulty of coding, but the continuous loss of Gas fees with each data call. Especially when market fluctuations are intense and high-frequency updates of price information are needed, watching ETH being gradually consumed feels really uncomfortable.

But have you ever thought that, in many cases, that 80% of Gas consumption is actually wasted money? Does your application really need to push new data to the chain every second? This is the problem that the APRO data extraction solution aims to solve — it uses a brand-new "pull model" to revolutionize the traditional "push model."

The core idea is actually very simple: don't let data actively find you; instead, fetch it only when you need it. For example, it's like the difference between ordering takeout — one way is the delivery person bringing you food every 5 minutes (push model), and the other is you placing an order only when you're truly hungry (pull model). For most application scenarios, the latter is more efficient and costs less.

First of all, this is indeed a "Gas-saving weapon."

Traditional oracles push updates to the chain periodically to keep data always up-to-date, regardless of whether you actually need it at the moment. APRO's pull model allows your smart contract to only actively fetch the latest data at critical moments — such as when a user executes a transaction, performs liquidation, or the contract matures. The direct result is a significant reduction in on-chain transaction volume and Gas consumption. For high-activity DeFi protocols, this could mean saving dozens or even hundreds of ETH in operational costs each month. This is not just optimization; it's a complete upgrade of operational cost structure.

Second, you can control the frequency of data updates yourself.

Different application scenarios have vastly different requirements for data freshness. Some need real-time data, while others only need updates once an hour.