# xerial/snappy-java

Snappy compressor/decompressor for Java

Repository: https://github.com/xerial/snappy-java
Canonical: https://ross.abutalabs.com/products/snappy-java
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2026-03-23T22:12:23+00:00

## Health v2 (maintenance only)
Score: 56/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 73, release rhythm 8, longevity 100
- inputs: {"age_days": 5110, "days_push": 163, "days_rel": 410, "gap_med": 311, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1081, forks 252 (observed 2026-08-28T04:03:30.890678+00:00)

## What it is
A Java port of Google's Snappy fast compressor/decompressor, using JNI to achieve near-native performance. It bundles native libraries for Windows, Mac, and Linux and supports compression of Java primitive arrays plus the Snappy framing format.

## Use cases
- compress large byte arrays quickly in Java
- add Snappy compression to a JVM data pipeline
- compress primitive arrays like int[] or double[] efficiently
- read or write Snappy framing-format streams
- reduce memory footprint of streaming compression in a server app

## When to choose
- you need very fast compression/decompression (hundreds of MB/s) in Java
- compression ratio is less important than speed
- you want a portable, drop-in JAR with bundled native libraries
- you need OSGi or multi-classloader-safe native loading

## When to avoid
- you need maximum compression ratio rather than speed (use gzip, bzip2, or zstd)
- you need a pure-Java implementation without native dependencies
- your platform lacks a prebuilt native library

## Facets
- artifact type: library
- maturity: stable
- function: compression, serialization
- domain: developer-tools, performance, files
- platform: jvm, cross-platform, windows
- tags: snappy, jni, java, data-compression, maven, linux, macos

## Member repositories
- xerial/snappy-java (main) score 56

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:30.890678+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:51:24.858415+00:00, confidence not recorded.
  - readme: https://github.com/xerial/snappy-java (fetched 2026-08-28T04:03:30.890678+00:00, sha db8ddcb3eba5)
- Data as of 2026-08-30T08:39:29.467469+00:00.