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Taro L. Saito 2020-10-20 21:46:49 -07:00
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snappy-java [![Build Status](https://travis-ci.org/xerial/snappy-java.svg?branch=master)](https://travis-ci.org/xerial/snappy-java) [![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.xerial.snappy/snappy-java/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.xerial.snappy/snappy-java/) [![Javadoc](http://javadoc-badge.appspot.com/org.xerial.snappy/snappy-java.svg?label=javadoc)](http://javadoc-badge.appspot.com/org.xerial.snappy/snappy-java)
===
snappy-java is a Java port of the snappy
[https://github.com/google/snappy], a fast C++ compresser/decompresser developed by Google.
snappy-java is a Java port of the [snappy](https://github.com/google/snappy), a fast C++ compresser/decompresser developed by Google.
## Features
* Fast compression/decompression around 200~400MB/sec.
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* JNI-based implementation to achieve comparable performance to the native C++ version.
* Although snappy-java uses JNI, it can be used safely with multiple class loaders (e.g. Tomcat, etc.).
* Compression/decompression of Java primitive arrays (`float[]`, `double[]`, `int[]`, `short[]`, `long[]`, etc.)
* To improve the compression ratios of these arrays, you can use a fast data-rearrangement implementation ([`BitShuffle`](https://oss.sonatype.org/service/local/repositories/releases/archive/org/xerial/snappy/snappy-java/1.1.3-M1/snappy-java-1.1.3-M1-javadoc.jar/!/org/xerial/snappy/BitShuffle.html)) before compression
* Portable across various operating systems; Snappy-java contains native libraries built for Window/Mac/Linux (64-bit). snappy-java loads one of these libraries according to your machine environment (It looks system properties, `os.name` and `os.arch`).
* To improve the compression ratios of these arrays, you can use a fast data-rearrangement implementation ([`BitShuffle`](https://oss.sonatype.org/service/local/repositories/releases/archive/org/xerial/snappy/snappy-java/1.1.8/snappy-java-1.1.8-javadoc.jar/!/org/xerial/snappy/BitShuffle.html)) before compression
* Portable across various operating systems; Snappy-java contains native libraries built for Window/Mac/Linux, etc. snappy-java loads one of these libraries according to your machine environment (It looks system properties, `os.name` and `os.arch`).
* If no native library for your platform is found, snappy-java will fallback to [pure-java implementation(#using-pure-java-snappy-implementation).
* Simple usage. Add the snappy-java-(version).jar file to your classpath. Then call compression/decompression methods in `org.xerial.snappy.Snappy`.
* [Framing-format support](https://github.com/google/snappy/blob/master/framing_format.txt) (Since 1.1.0 version)
* OSGi support