数据压缩处理库-snappy
2013-05-24 14:57:14 
阿炯
Snappy是一款压缩/解缩库，它不仅追求最大的压缩比，与其它压缩算法相兼容或取代之，旨在快速处理和合理的压缩率。
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.
On a single core of a Core i7 processor in 64-bit mode, Snappy compresses at about 250 MB/sec or more and decompresses at about 500 MB/sec or more.
Snappy is widely used inside Google, in everything from BigTable and MapReduce to our internal RPC systems. (Snappy has previously been referred to as “Zippy” in some presentations and the likes.)
Benchmarks against a few other compression libraries (zlib, LZO, LZF, FastLZ, and QuickLZ) are included in the source code distribution. The source code also contains a formal format specification, as well as a specification for a framing format useful for higher-level framing and encapsulation of Snappy data, e.g. for transporting Snappy-compressed data across HTTP in a streaming fashion.
Snappy is written in C++, but C bindings are included.
最新版本：1.1
项目主页：https://code.google.com/p/snappy/
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.
On a single core of a Core i7 processor in 64-bit mode, Snappy compresses at about 250 MB/sec or more and decompresses at about 500 MB/sec or more.
Snappy is widely used inside Google, in everything from BigTable and MapReduce to our internal RPC systems. (Snappy has previously been referred to as “Zippy” in some presentations and the likes.)
Benchmarks against a few other compression libraries (zlib, LZO, LZF, FastLZ, and QuickLZ) are included in the source code distribution. The source code also contains a formal format specification, as well as a specification for a framing format useful for higher-level framing and encapsulation of Snappy data, e.g. for transporting Snappy-compressed data across HTTP in a streaming fashion.
Snappy is written in C++, but C bindings are included.
最新版本：1.1
项目主页：https://code.google.com/p/snappy/