Mostlylucid.Ephemeral.Atoms.KeyedSequential 2.3.2

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package Mostlylucid.Ephemeral.Atoms.KeyedSequential --version 2.3.2
                    


                    

                
NuGet\Install-Package Mostlylucid.Ephemeral.Atoms.KeyedSequential -Version 2.3.2
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Mostlylucid.Ephemeral.Atoms.KeyedSequential" Version="2.3.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Mostlylucid.Ephemeral.Atoms.KeyedSequential" Version="2.3.2" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Mostlylucid.Ephemeral.Atoms.KeyedSequential" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Mostlylucid.Ephemeral.Atoms.KeyedSequential --version 2.3.2
                    


                    

                
#r "nuget: Mostlylucid.Ephemeral.Atoms.KeyedSequential, 2.3.2"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Mostlylucid.Ephemeral.Atoms.KeyedSequential@2.3.2
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Mostlylucid.Ephemeral.Atoms.KeyedSequential&version=2.3.2
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Mostlylucid.Ephemeral.Atoms.KeyedSequential&version=2.3.2
                    


                            Install as a Cake Tool

Mostlylucid.Ephemeral.Atoms.KeyedSequential

NuGet

Per-key sequential processing. Items with the same key are processed in order.

dotnet add package mostlylucid.ephemeral.atoms.keyedsequential

Quick Start

using Mostlylucid.Ephemeral.Atoms.KeyedSequential;

await using var atom = new KeyedSequentialAtom<Order, string>(
    keySelector: order => order.CustomerId,
    body: async (order, ct) => await ProcessOrder(order, ct));

await atom.EnqueueAsync(order1);  // Customer A
await atom.EnqueueAsync(order2);  // Customer A - waits for order1
await atom.EnqueueAsync(order3);  // Customer B - parallel with A

await atom.DrainAsync();

All Options

new KeyedSequentialAtom<T, TKey>(
    // Required: extract key from item
    keySelector: item => item.Key,

    // Required: async work body
    body: async (item, ct) => await ProcessAsync(item, ct),

    // Max concurrent operations across all keys
    // Default: Environment.ProcessorCount
    maxConcurrency: 16,

    // Max concurrent operations per key
    // Default: 1 (sequential per key)
    perKeyConcurrency: 1,

    // Prevent hot keys from starving cold keys
    // Default: false
    enableFairScheduling: true,

    // Shared signal sink
    // Default: null (isolated)
    signals: sharedSink
)

API Reference

// Enqueue work item, returns operation ID
ValueTask<long> id = await atom.EnqueueAsync(item, ct);

// Stop accepting work and wait for completion
await atom.DrainAsync(ct);

// Get recent operations snapshot
IReadOnlyCollection<EphemeralOperationSnapshot> snapshot = atom.Snapshot();

// Get aggregate stats
var (pending, active, completed, failed) = atom.Stats();

// Dispose
await atom.DisposeAsync();

Example: Order Processing

await using var atom = new KeyedSequentialAtom<Order, string>(
    keySelector: order => order.CustomerId,
    body: async (order, ct) =>
    {
        await ValidateInventory(order, ct);
        await ChargePayment(order, ct);
        await ShipOrder(order, ct);
    },
    maxConcurrency: 32,
    perKeyConcurrency: 1,
    enableFairScheduling: true);

foreach (var order in incomingOrders)
    await atom.EnqueueAsync(order);

// Customer A's orders: sequential
// Customer B's orders: sequential
// A and B: parallel

await atom.DrainAsync();
Package Description
mostlylucid.ephemeral Core library
mostlylucid.ephemeral.complete All in one DLL

License

Unlicense (public domain)

Product Compatible and additional computed target framework versions.
.NET 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.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (2)

Showing the top 2 NuGet packages that depend on Mostlylucid.Ephemeral.Atoms.KeyedSequential:

Package Downloads
mostlylucid.botdetection

Bot detection middleware for ASP.NET Core applications with behavioral analysis, header inspection, IP-based detection, and optional LLM-based classification.
mostlylucid.ephemeral.complete

Meta-package that references all Mostlylucid.Ephemeral packages - bounded async execution with signals, atoms, and patterns. Install this single package to get everything.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.3.2 1,778 1/9/2026
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