{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology cope with network congestion and high concurrency transaction demands?","a":"Database optimization: Use a distributed database and reasonably divide data into segments to improve database  performance. In addition, cache technologies such as Redis and memcache can be utilized to cache hot data, reducing database IO operations."}]}],"pr":"f7d6b84d3be20bc5e665ed6ae74e8416022633e964b1ee532dc4c0e02b4dd3cb"}