Blockchain-based data synchronization method, apparatus, and computer-readable storage medium

A computer device of a first service node in a blockchain, comprising:

• at least one memory;
• and
• at least one processor coupled to the at least one memory and being configured to perform:
• acquiring target block data of a target block having a minimum block height that is greater than a first local block height, wherein the first local block height is a maximum block height of local block data of the first service node before the first service node acquires the target block data, the target block being one of a plurality of blocks in a blockchain system, the plurality of blocks including information about one or more network transactions for verifying information validity and for generating a next block;
• adding a maximum block height among block heights carried in the target block data to the maximum block height queue, the maximum block height queue comprising maximum block heights of block data pulled by the first service node in block data pulling operations;
• determining a block height of missing block data according to a block height of the target block data and the first local block height, the block height of the missing block data being less than the minimum block height of the target block data and greater than the first local block height;
• adding the block height of the missing block data to a missing block queue;
• and
• requesting a target service node to synchronize the missing block data according to the block height of the missing block data in the missing block queue.

A non-transitory computer-readable storage medium, storing a computer program, the computer program comprising program instructions, the program instructions, when executed by at least one processor of a first service node in a blockchain, cause the at least one processor to perform:

• acquiring target block data of a target block having a minimum block height that is greater than a first local block height, wherein the first local block height is a maximum block height of local block data of the first service node before the first service node acquires the target block data, the target block being one of a plurality of blocks in a blockchain system, the plurality of blocks including information about one or more network transactions for verifying information validity and for generating a next block;
• adding a maximum block height among block heights carried in the target block data to the maximum block height queue, the maximum block height queue comprising maximum block heights of block data pulled by the first service node in block data pulling operations;
• determining a block height of missing block data according to a block height of the target block data and the first local block height, the block height of the missing block data being less than the minimum block height of the target block data and greater than the first local block height;
• adding the block height of the missing block data to a missing block queue;
• and
• requesting a target service node to synchronize the missing block data according to the block height of the missing block data in the missing block queue.