ASCH implements a tool called smartdb that encapsulates access to caching and databases and supports automatic rollback mechanisms of different sizes. Developers only need to care about which data needs to be added or modified without having to worry about whether the data is in memory or Disk and the operation of the data is successful, in the smartdb support, dapp can do high-performance at the same time, while maintaining the simplicity of the code (its development is close to the ether square solidity, far lower than lisk)