{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the aspects of blockchain performance optimization?","a":"Reducing CPU usage and memory consumption:  By using optimization methods to reduce the usage of CPU and memory, such as deleting old data no longer needed, using fixed-size blocks to generate new data, and adding cache functionality to save current transaction data."}]}],"pr":"c0aaf2fc131f5190e2dd197e063d9c865bae9ceb2bbb08088fdec09ea85b53d8"}