Erasure code-based encoding method and related device

An encoding device comprising:

• a memory configured to store instructions;
• and
• at least one processor coupled to the memory and configured to execute the instructions to cause the encoding device to:
• obtain, in batches, data blocks of an encoding group;
• perform, in an ith time of encoding, encoding processing on an incremental data block in the data blocks using an erasure code to generate an incremental parity block, wherein the incremental data block comprises at least one data block, and wherein i is an integer greater than 1;
• perform an exclusive OR operation on the incremental parity block and an original global parity block to generate a first incremental global parity block;
• and
• convert the first incremental global parity block into an electronic signal and store the electronic signal comprising the first incremental global parity block onto a non-transitory hardware storage device,
• wherein the original global parity block is a previous first incremental global parity block in an (i−1)th time of encoding and is for reconstructing a first damaged data block in an original data block,
• wherein the original data block is from before the (i−1)th time of encoding,
• wherein the original data block and the incremental data block are of the encoding group, and
• wherein the first incremental global parity block is for reconstructing a second damaged data block in the original data block and the incremental data block.

A computer program product comprising computer-executable instructions that are stored on a non-transitory computer-readable medium and that, when executed by at least one processor, cause an encoding device to:

• obtain, in batches, data blocks of an encoding group;
• perform, in an ith time of encoding, encoding processing on an incremental data block in the data blocks using an erasure code to generate an incremental parity block, wherein the incremental data block comprises at least one data block, and wherein i is an integer greater than 1;
• perform an exclusive OR operation on the incremental parity block and an original global parity block to generate a first incremental global parity block;
• and
• convert the first incremental global parity block into an electronic signal and store the electronic signal comprising the first incremental global parity block onto a non-transitory hardware storage device,
• wherein the original global parity block is a previous first incremental global parity block in an (i−1)th time of encoding and is for reconstructing a first damaged data block in an original data block,
• wherein the original data block is from before the (i−1)th time of encoding,
• wherein the original data block and the incremental data block are of the encoding group, and
• wherein the first incremental global parity block is for reconstructing a second damaged data block in the original data block and the incremental data block.