2020-10-12 04:24:21 +08:00
|
|
|
Snappy is a compression/decompression library. It does not aim for
|
|
|
|
|
maximum compression, or compatibility with any other compression
|
|
|
|
|
library; instead, it aims for very high speeds and reasonable
|
|
|
|
|
compression. For instance, compared to the fastest mode of zlib,
|
|
|
|
|
Snappy is an order of magnitude faster for most inputs, but the
|
|
|
|
|
resulting compressed files are anywhere from 20% to 100% bigger. (For
|
|
|
|
|
more information, see "Performance", below.)
|
2013-02-12 05:20:07 +08:00
|
|
|
|
|
|
|
|
Snappy has the following properties:
|
|
|
|
|
|
2020-10-12 04:24:21 +08:00
|
|
|
* Fast: Compression speeds at 250 MB/sec and beyond, with no assembler
|
|
|
|
|
code. See "Performance" below.
|
|
|
|
|
* Stable: Over the last few years, Snappy has compressed and
|
|
|
|
|
decompressed petabytes of data in Google's production environment. The
|
|
|
|
|
Snappy bitstream format is stable and will not change between
|
|
|
|
|
versions.
|
|
|
|
|
* Robust: The Snappy decompressor is designed not to crash in the face
|
|
|
|
|
of corrupted or malicious input.
|
|
|
|
|
* Free and open source software: Snappy is licensed under a BSD-type
|
|
|
|
|
license. For more information, see the included COPYING file.
|
2013-02-12 05:20:07 +08:00
|
|
|
|
|
|
|
|
Snappy has previously been called "Zippy" in some Google presentations
|
|
|
|
|
and the like.
|
