{"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":"Optimize  database design: Optimize the database by reducing redundant data and large tables to more efficiently utilize storage space."}]}],"pr":"d53a2db58084282933aa59ae2c0d58e87198d4da761c10e9415e080cee325941"}