At Present, the big data framework used in the background development of the PalletOne blockchain browser has been implemented to obtain blocks and related transaction data information from the test network in real time, while realizing the Exactly Once of the transaction.

Exactly Once, that is, each data record is processed exactly once. This includes processing failures and then reading the raw data for processing, so that no data is lost and there is no duplicate data processing. For a raw data, the final result data output can be guaranteed to be consistent.