19 lines
957 B
Plaintext
19 lines
957 B
Plaintext
The zfec package implements an "erasure code", or "forward error correction
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code".
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The most widely known example of an erasure code is the RAID-5 algorithm which
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makes it so that in the event of the loss of any one hard drive, the stored data
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can be completely recovered. The algorithm in the zfec package has a similar
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effect, but instead of recovering from the loss of only a single element, it can
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be parameterized to choose in advance the number of elements whose loss it can
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tolerate.
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This package is largely based on the old "fec" library by Luigi Rizzo et al.,
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which is a mature and optimized implementation of erasure coding. The zfec
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package makes several changes from the original "fec" package, including
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addition of the Python API, refactoring of the C API to support zero-copy
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operation, a few clean-ups and optimizations of the core code itself, and the
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addition of a command-line tool named "zfec".
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WWW: https://github.com/tahoe-lafs/zfec
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