SequentialGuid 4.0.5
dotnet add package SequentialGuid --version 4.0.5
NuGet\Install-Package SequentialGuid -Version 4.0.5
<PackageReference Include="SequentialGuid" Version="4.0.5" />
paket add SequentialGuid --version 4.0.5
#r "nuget: SequentialGuid, 4.0.5"
// Install SequentialGuid as a Cake Addin #addin nuget:?package=SequentialGuid&version=4.0.5 // Install SequentialGuid as a Cake Tool #tool nuget:?package=SequentialGuid&version=4.0.5
SequentialGuid
Will generate Sequential Guids based on MongoDB's ObjectId specification sorting algorithm. Date & time are encoded into the value so you do not need to store them separately in your database
Author's Note: The entire purpose of this library is for you to have a dependency free way of generating unique uuid/Guid values that contain the time of creation which will typically result in lower clustered index fragmentation on the back end once they get persisted but it will allow you to generate the keys all the way up in WebAssembly or MAUI and pass it through your API and store it in the database this can help you with itempotency not requiring a trip to the database to generate the ID. Please DO NOT open an issue telling me it doesn't use the Unix timestamp or it isn't an ObjectId those are both true I had to find 32 additional bits to fill a Guid vs ObjectId and so I opted to use the Ticks count to do so while retaining the remainder of the Mongo algorithm. An added bonus to this is this library is not subject to break on 19 January 2038, at 03:14:07 UTC when the Unix timestamp overflows a 32 bit integer.
Returns a new Guid or SqlGuid. The 16-byte Guid or SqlGuid consists of:
- A 8-byte timestamp, representing the Guid's creation, measured in system ticks.
- A 5-byte random value generated once per process. This random value is unique to the machine and process.
- A 3-byte incrementing counter, initialized to a random value.
If you use SQL Server then I highly recommend reading the following two articles to get a basic understanding of how SQL Server sorts uniqueidentifier values
Define an interface to the signature you like
public interface IIdGenerator
{
Guid NewId();
}
Define your implementing class which can be transient since the singleton is implemented by the framework
public class SequentialIdGenerator : IIdGenerator
{
public Guid NewId() => SequentialGuidGenerator.Instance.NewGuid();
}
Wire it up to .NET Core dependency injection in the ConfigureServices method during application startup
public void ConfigureServices(IServiceCollection services)
{
services.AddTransient<IIdGenerator, SequentialIdGenerator>();
}
Finally define a base entity for your application which will contain an id and a timestamp as soon as you initialize it. Note I do not advocate setting a default Id getter this way just illustrating it can be done
public abstract class BaseEntity
{
public Guid Id { get; set; } = SequentialGuidGenerator.Instance.NewGuid();
public DateTime? Timestamp => Id.ToDateTime();
// If you really must have non-UTC time
public DateTime? LocalTime => Id.ToDateTime()?.ToLocalTime();
}
You can convert between a standard Guid and a SqlGuid using the available helper functions
var guid = SequentialGuidGenerator.Instance.NewGuid();
var sqlGuid = guid.ToSqlGuid();
OR
var sqlGuid = SequentialSqlGuidGenerator.Instance.NewSqlGuid();
var guid = sqlGuid.ToGuid();
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net5.0 was computed. net5.0-windows was computed. net6.0 is compatible. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 is compatible. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 is compatible. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. |
.NET Core | netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed. |
.NET Standard | netstandard2.0 is compatible. netstandard2.1 is compatible. |
.NET Framework | net461 was computed. net462 is compatible. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed. |
MonoAndroid | monoandroid was computed. |
MonoMac | monomac was computed. |
MonoTouch | monotouch was computed. |
Tizen | tizen40 was computed. tizen60 was computed. |
Xamarin.iOS | xamarinios was computed. |
Xamarin.Mac | xamarinmac was computed. |
Xamarin.TVOS | xamarintvos was computed. |
Xamarin.WatchOS | xamarinwatchos was computed. |
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.NETFramework 4.6.2
- No dependencies.
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.NETStandard 2.0
- No dependencies.
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.NETStandard 2.1
- No dependencies.
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net6.0
- No dependencies.
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net7.0
- No dependencies.
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net8.0
- No dependencies.
NuGet packages (13)
Showing the top 5 NuGet packages that depend on SequentialGuid:
Package | Downloads |
---|---|
BR.MicroServices.Utilities
Package Description |
|
SequentialGuid.NodaTime
Provide extension methods to round trip between NodaTime Instant and sequential guid |
|
Loyo.EntityFramework
EntityFrameworkCore UnitOfWork Repositories |
|
Atomiv.Infrastructure.SequentialGuid
Package Description |
|
Optivem.Atomiv.Infrastructure.SequentialGuid
Package Description |
GitHub repositories
This package is not used by any popular GitHub repositories.
Version | Downloads | Last updated |
---|---|---|
4.0.5 | 31,360 | 3/20/2024 |
4.0.4 | 400,598 | 2/27/2023 |
4.0.3 | 49,191 | 10/25/2022 |
4.0.2 | 8,708 | 10/20/2022 |
4.0.1 | 5,294 | 10/10/2022 |
4.0.0 | 3,416 | 10/5/2022 |
3.0.1 | 97,963 | 2/22/2022 |
3.0.0 | 34,197 | 9/15/2021 |
2.5.0 | 256,091 | 11/18/2020 |
2.4.2 | 21,770 | 7/31/2020 |
2.4.1 | 35,192 | 7/8/2020 |
2.4.0 | 182,572 | 12/13/2017 |
2.2.1 | 2,114 | 10/17/2017 |
2.2.0 | 2,098 | 9/24/2017 |
1.0.0 | 5,341 | 2/17/2014 |