Excalibur.Outbox 10.0.0-alpha.16

This is a prerelease version of Excalibur.Outbox.

dotnet add package Excalibur.Outbox --version 10.0.0-alpha.16

NuGet\Install-Package Excalibur.Outbox -Version 10.0.0-alpha.16

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="Excalibur.Outbox" Version="10.0.0-alpha.16" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Excalibur.Outbox" Version="10.0.0-alpha.16" />
                    

                            Directory.Packages.props

<PackageReference Include="Excalibur.Outbox" />
                    

                            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 Excalibur.Outbox --version 10.0.0-alpha.16

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Excalibur.Outbox, 10.0.0-alpha.16"

#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 Excalibur.Outbox@10.0.0-alpha.16

#: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=Excalibur.Outbox&version=10.0.0-alpha.16&prerelease
                    

                            Install as a Cake Addin

#tool nuget:?package=Excalibur.Outbox&version=10.0.0-alpha.16&prerelease
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Excalibur.Outbox

Transactional outbox pattern implementation for reliable message delivery.

Installation

dotnet add package Excalibur.Outbox

Features

IOutboxStore - Outbox message persistence abstraction
OutboxOptions - Configuration for outbox behavior
TypeForwarders for backward compatibility with existing code
Framework-owned claims, attempt budgets, backoff scheduling and dead-letter transitions

Usage

services.AddDispatch(dispatch => dispatch.UseOutbox());
services.AddExcalibur(x => x.AddOutbox(outbox => outbox
    .UseSqlServer(sql => sql.ConnectionString(connectionString))
    .WithProcessing(processing => processing
        .BatchSize(100)
        .MaxRetryCount(3)
        .RetryDelay(TimeSpan.FromSeconds(10)))
    .EnableBackgroundProcessing()));

Transactional Outbox Pattern

Handlers explicitly buffer events through IOutboxWriter. The middleware stages them after successful handling, and the opt-in hosted processor claims and delivers eligible messages. Register handlers and the selected transport as appropriate for your application. A shared business-data transaction requires the corresponding transaction integration; buffering alone does not make business writes atomic.

BatchSize sets producer and consumer batch defaults. MaxRetryCount excludes the initial attempt: three retries means four total attempts; zero means one. RetryDelay supplies the default fixed backoff calculator for this processor. Backoff-capable stores retain the later of that schedule and their failure floor. A consumer-supplied IBackoffCalculator, including the Polly adapter, takes precedence.

Explicit Configure/PostConfigure callbacks for delivery and background options override builder defaults regardless of registration order. Inspect those resolved options for effective diagnostics. For int.MaxValue retries, the initial attempt makes the default total unrepresentable; configure a positive OutboxDeliveryOptions.MaxAttempts total explicitly or choose fewer retries. Delivery options are validated when consumed, so a custom publisher can own an independent policy.

Runtime payload serialization may require source-generated serializer configuration for trimming or Native AOT. The local runtime controls do not certify every provider under Native AOT.

Excalibur.Outbox.SqlServer - SQL Server outbox implementation
Excalibur.Dispatch.Abstractions - Message and outbox interfaces

License

This project is multi-licensed under:

See LICENSE for details.

Product	Compatible and additional computed target framework versions.
.NET	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.

net10.0
- Ben.Demystifier (>= 0.4.1)
- CloudNative.CloudEvents (>= 2.8.0)
- CloudNative.CloudEvents.SystemTextJson (>= 2.8.0)
- Cronos (>= 0.12.0)
- Dapper (>= 2.1.72)
- Excalibur.Data.Abstractions (>= 10.0.0-alpha.16)
- Excalibur.Dispatch (>= 10.0.0-alpha.16)
- Excalibur.Dispatch.Abstractions (>= 10.0.0-alpha.16)
- Excalibur.Dispatch.LeaderElection.Abstractions (>= 10.0.0-alpha.16)
- Excalibur.Hosting (>= 10.0.0-alpha.16)
- FluentValidation (>= 12.1.1)
- FluentValidation.DependencyInjectionExtensions (>= 12.1.1)
- IdentityModel (>= 7.0.0)
- JsonNet.ContractResolvers (>= 2.0.0)
- Medo.Uuid7 (>= 3.2.0)
- MemoryPack (>= 1.21.4)
- Microsoft.Extensions.Caching.Abstractions (>= 10.0.10)
- Microsoft.Extensions.Caching.Memory (>= 10.0.10)
- Microsoft.Extensions.Configuration (>= 10.0.10)
- Microsoft.Extensions.Configuration.Abstractions (>= 10.0.10)
- Microsoft.Extensions.Configuration.Binder (>= 10.0.10)
- Microsoft.Extensions.Configuration.CommandLine (>= 10.0.10)
- Microsoft.Extensions.Configuration.EnvironmentVariables (>= 10.0.10)
- Microsoft.Extensions.Configuration.Json (>= 10.0.10)
- Microsoft.Extensions.DependencyInjection (>= 10.0.10)
- Microsoft.Extensions.DependencyInjection.Abstractions (>= 10.0.10)
- Microsoft.Extensions.Diagnostics.HealthChecks (>= 10.0.10)
- Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions (>= 10.0.10)
- Microsoft.Extensions.Hosting (>= 10.0.10)
- Microsoft.Extensions.Hosting.Abstractions (>= 10.0.10)
- Microsoft.Extensions.Http (>= 10.0.10)
- Microsoft.Extensions.Logging (>= 10.0.10)
- Microsoft.Extensions.Logging.Abstractions (>= 10.0.10)
- Microsoft.Extensions.Logging.Console (>= 10.0.10)
- Microsoft.Extensions.ObjectPool (>= 10.0.10)
- Microsoft.Extensions.Options (>= 10.0.10)
- Microsoft.Extensions.Options.ConfigurationExtensions (>= 10.0.10)
- Microsoft.Extensions.Options.DataAnnotations (>= 10.0.10)
- Microsoft.IdentityModel.Tokens (>= 8.17.0)
- Polly (>= 8.6.6)
- System.IdentityModel.Tokens.Jwt (>= 8.17.0)
- System.IO.Hashing (>= 10.0.7)
- System.Threading.RateLimiting (>= 10.0.7)

NuGet packages (15)

Showing the top 5 NuGet packages that depend on Excalibur.Outbox:

Package	Downloads
Excalibur.A3 Authorization, Authentication, and Audit (A3) services for the Excalibur framework. PRE-RELEASE: the public API is not frozen and may change between pre-release builds. Not recommended for production use. Known issues: https://docs.excalibur-dispatch.dev/docs/known-issues	29.9K
Excalibur.Data.MongoDB MongoDB database provider implementation for Excalibur data access layer. PRE-RELEASE: the public API is not frozen and may change between pre-release builds. Not recommended for production use. Known issues: https://docs.excalibur-dispatch.dev/docs/known-issues	8.3K
Excalibur.LeaderElection Core leader election utilities for the Excalibur framework. Provides distributed coordination capabilities with pluggable providers (SqlServer, Redis, Consul, Kubernetes, InMemory). PRE-RELEASE: the public API is not frozen and may change between pre-release builds. Not recommended for production use. Known issues: https://docs.excalibur-dispatch.dev/docs/known-issues	8.2K
Excalibur.Data.InMemory In-memory provider implementation for Excalibur data access layer testing. PRE-RELEASE: the public API is not frozen and may change between pre-release builds. Not recommended for production use. Known issues: https://docs.excalibur-dispatch.dev/docs/known-issues	7.1K
Excalibur.Outbox.SqlServer SQL Server implementation of the transactional outbox pattern for Excalibur, providing reliable message delivery with at-least-once semantics using SQL Server as the backing store. PRE-RELEASE: the public API is not frozen and may change between pre-release builds. Not recommended for production use. Known issues: https://docs.excalibur-dispatch.dev/docs/known-issues	7.0K

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
10.0.0-alpha.16	47	10/21/2026
10.0.0-alpha.15	191	10/11/2026
10.0.0-alpha.14	203	10/2/2026
10.0.0-alpha.13	194	9/29/2026
10.0.0-alpha.12	200	9/25/2026
10.0.0-alpha.11	218	9/15/2026
10.0.0-alpha.10	213	9/6/2026
10.0.0-alpha.9	214	8/31/2026
10.0.0-alpha.8	257	8/14/2026
10.0.0-alpha.7	236	8/13/2026
10.0.0-alpha.6	253	8/11/2026
10.0.0-alpha.5	245	8/10/2026
10.0.0-alpha.4	229	8/10/2026
3.0.0-alpha.216	195	6/30/2026
3.0.0-alpha.215	184	6/23/2026
3.0.0-alpha.214	184	6/23/2026
3.0.0-alpha.208	182	6/11/2026
3.0.0-alpha.207	187	6/11/2026
3.0.0-alpha.205	193	6/10/2026
3.0.0-alpha.204	201	6/8/2026

Release notes and versioning policy: https://docs.excalibur-dispatch.dev/docs/migration/version-upgrades