HyperSerializer 1.0.13

.NET 5.0 .NET Core 3.1
Install-Package HyperSerializer -Version 1.0.13
dotnet add package HyperSerializer --version 1.0.13
<PackageReference Include="HyperSerializer" Version="1.0.13" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add HyperSerializer --version 1.0.13
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: HyperSerializer, 1.0.13"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install HyperSerializer as a Cake Addin
#addin nuget:?package=HyperSerializer&version=1.0.13

// Install HyperSerializer as a Cake Tool
#tool nuget:?package=HyperSerializer&version=1.0.13
The NuGet Team does not provide support for this client. Please contact its maintainers for support.


NuGet version (HyperSerializer)

If you're looking for the fastest Microsoft.Net binary serializer known to Git-kind, look no further. HyperSerializer is up to 18x faster than MessagePack and Protobuf, and 11x faster than BinaryPack, with roughly equivelant or better memory allocation. Simply install the Nuget package (Install-Package HyperSerializer) and serialize/deserialize with just 2 lines of code.

//Sync Example
Test obj = new();
Span<byte> bytes = HyperSerializer<Test>.Serialize(obj);
Test objDeserialized = HyperSerializer<Test>.Deserialize(bytes);

Head to Head Speed Test

BenchmarkDotNet experiment serializing and deserializing 1M "Test" classes. Times in Milliseconds - Lower is Better. See "Benchmarks" for serialized test object definiiton and additional stats on memory utiltization.

Execution Duration

Implementation and Framework Support

HyperSerializer was built as a champion/challenger (C++ vs C#) experiment to support the nanosecond latency requirements of high frequency trading. HyperSerializer uses the managed Span<T> and Memory<T> structs to acheive extreme speed and low memory allocation without unsafe code. HyperSerializer is 100% thread-safe and comes with both sync and async serialization and deserialization methods. Out of the box support for .NETCoreApp 3.1, net5.0, net6.0.

HyperSerializer is intended for use cases such as caching and interservice communication behind firewalls or between known parites. It is implemented using a customer binary format (aka wire format) and uses bounding techniques to protect against buffer overflows. As a result, attempting to deserialize a message that exceeds the size of an expected data type will result in an exception in most cases as described later in this section. For example, the following code which can be found in SerializerTests.cs in the test project attempts to deserialize an 8 BYTE buffer as a 4 BYTE int, which results in an ArgumentOutOfRangeException:

//Simulate foreign serialization
long i = 1L << 32;
Span<byte> buffer = default;
MemoryMarshal.Write(buffer, ref i);

//Simulate attempting to deserialize Int64 (8 bytes) to Int32 (4 bytes)
var deserialize = HyperSerializer<int>.Deserialize(buffer);

//Result: ArguementOutOfRangeException

In the event the destiation data type was (1) 8 BYTES in length or (2) an object containing properties with an aggregate size exceeding 8 BYTES, one of the following would occur: (1) a data type specific execption, in most cases - ArguementOutOfRangeException, OR (2) no exception at all if the bytes happen to represent valid values for the destination type(s).


HyperSerializer is a contract-less serializalizer that supports serializing primatives, structs, classes and record types. As a result of being contract-less, changing the order or removing properties from a class that existed at the time of serialization will break deserialization. If you ADD new properties to a class WITHOUT changing the names, types and order of preexisting properties, it will not break deserialization of previously serialized objects but should be tested throughly. With respect to classes, only properties with public getters and setters will be serialied (fields and properties not matching the aforementioned crieria will be ignored).

//Sync Example
Test obj = new();
Span<byte> bytes = HyperSerializer<Test>.Serialize(obj);
Test objDeserialized = HyperSerializer<Test>.Deserialize(bytes);
//Async Example
Test obj = new();
Memory<byte> bytes = HyperSerializer<Test>.SerializeAsync(obj);
Test objDeserialized = HyperSerializer<Test>.DeserializeAsync(bytes);

//Deserialize byte array...
byte[] bytes; // example - bytes you received over the wire, from cache etc...
Test objDeserialized = HyperSerializer<Test>.Deserialize(bytes);
Test objDeserialized = HyperSerializer<Test>.DeserializeAsync(bytes);


Benchmarks performed using BenchmarkDotNet follow the intended usage pattern of serializing and deserializing a single instance of an object at a time (as opposed to batch collection serialization used in the benchmarks published by other libraries such as Apex). The benchmarks charts displayed below represent 1 million syncronous serialization and deserialization operations of the following object:

public class Test {
    public Guid? Gn { get; set; }
    public int A { get; set; }
    public long B { get; set; }
    public DateTime C { get; set; }
    public uint D { get; set; }
    public decimal E { get; set; }
    public TimeSpan F { get; set; }
    public Guid G { get; set; }
    public TestEnum H { get; set; }
    public string I { get; set; }

Speed - Serializing and Deserializing 1M "Test" Objects (Times in Milliseconds - Lower is Better) - HyperSerializer is roughly 3x faster than ApexSerializer and 18x faster than MessagePack and Protobuf...

Execution Duration

Memory - Serializing and Deserializing 1M "Test" Objects (Memory in Megabytes - Lower is Better) - HyperSerializer requres roughly the same memory allocation as MessagePack and half that of ApexSerializer and Protobuf...

Execution Duration

BenchmarkDotNet=v0.13.1, OS=Windows 10.0.19044.1415 (21H2)
Intel Core i9-10980XE CPU 3.00GHz, 1 CPU, 36 logical and 18 physical cores
.NET SDK=6.0.101
  [Host]     : .NET 6.0.1 (, X64 RyuJIT
  Job-XTVWKK : .NET 6.0.1 (, X64 RyuJIT

|                Method|       Mean|      Error|    StdDev|  Ratio|  RatioSD|       Gen 0|  Allocated
|       HyperSerializer|   49.95 ms|   0.543 ms|  0.508 ms|   1.00|     0.00|  17000.0000|     214 MB
| HyperSerializerUnsafe|   49.98 ms|   0.509 ms|  0.476 ms|   1.00|     0.01|  17000.0000|     214 MB
|        ApexSerializer|  155.18 ms|   0.884 ms|  0.827 ms|   3.11|     0.03|  35000.0000|     437 MB
| MessagePackSerializer|  899.12 ms|   0.994 ms|  0.881 ms|  18.02|     0.16|  16000.0000|     205 MB
|    ProtobufSerializer|  917.73 ms|  10.020 ms|  9.372 ms|  18.37|     0.17|  35000.0000|     435 MB


The HyperSerializer project contains an unsafe implementation of the HyperSerializer<T>, named HyperSerializerUnsafe<T>. It is an experimental version intended for benchmarking purposes and does not meaningfuly outperform HyperSerializer<T> in most scenarios, if at all (see table above). As such, it is not recommended for end user consumption.


Unsupported types

Serialization of the following types and nested types is planned but not supported at this time (if you would like to contribute, fork away or reach out to collaborate)...

  • Complex type properties (i.e. a class with a property of type ANY class). If a class contains a property that is a complex type, the class will still be serialized but the property will be ignored.
  • Dictionaries are not supported at this type (arrays, generic lists, etc. are supported). If a class contains a property of type Dictionary, the class will still be serialized but the property will be ignored.

Property Exclusion

If you need to exclude a property from being serialized for reasons other then performance (unless nanoseconds actually matter to you), presently your only option is a DTO. If you would like this feature added feel free to contribute or log an issue.

Feedback, Suggestions and Contributions

Are all welcome!

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows
.NET Core netcoreapp3.1
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.0.13 171 6/3/2022
1.0.12 457 5/19/2022
1.0.11 5,919 1/31/2022
1.0.10 1,862 1/14/2022
1.0.9 78 1/14/2022
1.0.8 84 1/13/2022
1.0.7 160 1/9/2022
1.0.6 89 1/9/2022
1.0.5 86 1/4/2022
1.0.4 89 1/4/2022