擦除编码
Erasure encoding is a form of data protection that allows for the efficient storage and transmission of large amounts of data without having to store or transmit multiple copies. It works by dividing the original data into a number of pieces, called shards, which are then encoded using an algorithm. These individual pieces can be stored on different servers and/or transmitted over networks with minimal overhead.
When it comes time to recover the original file from its components, only some (rather than all) of these shards need to be retrieved in order to recreate it. This makes erasure encoding an ideal choice when working with large files such as videos or audio recordings. The term “erasing” is used because any piece not required for reconstruction can effectively be erased from existence until needed again – saving considerable space compared with storing multiple copies of the same information.
One example where this technology has been widely adopted is blockchain technology; specifically within cryptocurrency networks like Bitcoin and Ethereum where users must prove ownership before being allowed access to their funds (to prevent double spending). In this case, Erasure Codes are used to split up transactions so they can be verified quickly and securely while still maintaining privacy between users.
The most common type of erasure coding algorithm used in these contexts is Reed-Solomon codes; however there are many other algorithms available depending on specific requirements such as redundancy, error correction capability etc.. Each implementation will have its own advantages and disadvantages but generally speaking they provide excellent performance in terms of both speed and accuracy when compared with traditional backup methods like mirroring or RAID arrays.
