Data processing method and apparatus based on node internal memory, device and medium

A data processing apparatus based on a node internal memory in a target blockchain, the apparatus being deployed on a blockchain node, comprising:

• at least one memory configured to store program code;
• and
• at least one processor configured to read the program code and operate as instructed by the program code, the program code including:
• target read data determining code configured to cause the at least one processor to, based on a first block containing a transaction being broadcasted for performing consensus processing thereon, acquire, from the node internal memory, a write cache mapping table, which maintains a one-to-one correspondence relationship between a block hash value of each block and a write cache of each block, and determine target read data based on a first block cache of the first block in the write cache mapping table;
• and
• transaction execution code configured to cause the at least one processor to execute the transaction based on the target read data, store target cached data, which is obtained as a result of executing of the transaction, to the first block cache, and write the first block into a bifurcated blockchain.

A non-transitory computer-readable storage medium, storing a computer program, the computer program being loaded and executed by at least one processor to cause the at least one processor to perform:

• based on a first block containing a transaction being broadcasted for performing consensus processing thereon, acquiring, from a node internal memory, a write cache mapping table, which maintains a one-to-one correspondence relationship between a block hash value of each block and a write cache of each block;
• determining target read data based on a first block cache of the first block in the write cache mapping table;
• and
• executing the transaction based on the target read data, storing target cached data, which is obtained as a result of executing of the transaction, to the first block cache, and writing the first block into a bifurcated blockchain.