ZstdSharp

ZstdSharp is a port of zstd compression library to С#
Based on Zstandard v1.5.4
Supports .NET Core 3.1, .NET 5+, .NET Standard 2.0+, .NET Framework 4.6.1+

Usage

ZstdSharp has an unsafe API much the same as zstd.
There are also safe wrappers.

Compress data:

var src = File.ReadAllBytes("dickens");
using var compressor = new Compressor(level);
var compressed = compressor.Wrap(src);

Decompress data:

var src = File.ReadAllBytes("dickens.zst");
using var decompressor = new Decompressor();
var decompressed = decompressor.Unwrap(src);

Streaming compression:

using var input = File.OpenRead("dickens");
using var output = File.OpenWrite("dickens.zst");
using var compressionStream = new CompressionStream(output, level);
input.CopyTo(compressionStream);

Streaming decompression:

using var input = File.OpenRead("dickens.zst");
using var output = File.OpenWrite("dickens");
using var decompressionStream = new DecompressionStream(input);
decompressionStream.CopyTo(output);

Benchmark

Best performance is achieved on .NET. System.Runtime.Intrinsics namespace is required for hardware accelerated bit and vector operations. .NET Standard and .NET Framework will use software implementation

Comparision zstd (native) and ZstdSharp

BenchmarkDotNet=v0.13.2, OS=Windows 10 (10.0.19044.2604/21H2/November2021Update)
12th Gen Intel Core i7-12700, 1 CPU, 20 logical and 12 physical cores
.NET SDK=7.0.101
  [Host]     : .NET 7.0.1 (7.0.122.56804), X64 RyuJIT AVX2
  DefaultJob : .NET 7.0.1 (7.0.122.56804), X64 RyuJIT AVX2

Compression level 1

Method	Mean	Error	StdDev	Ratio
CompressNative	24.628 ms	0.0589 ms	0.0550 ms	1.00
CompressSharp	32.838 ms	0.0749 ms	0.0625 ms	1.33
DecompressNative	5.536 ms	0.0121 ms	0.0108 ms	1.00
DecompressSharp	6.962 ms	0.0404 ms	0.0377 ms	1.26

Compression level 5

Method	Mean	Error	StdDev	Ratio
CompressNative	69.860 ms	0.2097 ms	0.1962 ms	1.00
CompressSharp	91.441 ms	0.2084 ms	0.1847 ms	1.31
DecompressNative	6.101 ms	0.0251 ms	0.0222 ms	1.00
DecompressSharp	8.299 ms	0.0344 ms	0.0287 ms	1.36

Compression level 15

Method	Mean	Error	StdDev	Ratio
CompressNative	2,238.109 ms	10.3414 ms	9.1674 ms	1.00
CompressSharp	2,275.256 ms	12.6440 ms	11.8272 ms	1.02
DecompressNative	5.476 ms	0.0224 ms	0.0210 ms	1.00
DecompressSharp	6.894 ms	0.0137 ms	0.0122 ms	1.26