{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to solve the problem of imminent exhaustion of node space?","a":"Data compression and archiving: Implement data compression and  archiving techniques to reduce the occupied space of large files."}]}],"pr":"de80028d43174b3bac9ec5a53ea51167dabac45260e83aec7e0e50d1dac5fd0a"}