OrionPatch.EntityFrameworkCore 0.2.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package OrionPatch.EntityFrameworkCore --version 0.2.0
                    


                    

                
NuGet\Install-Package OrionPatch.EntityFrameworkCore -Version 0.2.0
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="OrionPatch.EntityFrameworkCore" Version="0.2.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="OrionPatch.EntityFrameworkCore" Version="0.2.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="OrionPatch.EntityFrameworkCore" />
                    


                            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 OrionPatch.EntityFrameworkCore --version 0.2.0
                    


                    

                
#r "nuget: OrionPatch.EntityFrameworkCore, 0.2.0"
#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 OrionPatch.EntityFrameworkCore@0.2.0
#: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=OrionPatch.EntityFrameworkCore&version=0.2.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=OrionPatch.EntityFrameworkCore&version=0.2.0
                    


                            Install as a Cake Tool

OrionPatch.EntityFrameworkCore

EF Core storage backend for OrionPatch. Adds the OrionPatch_Outbox table with provider-aware competing-consumers claim and a SaveChangesInterceptor that flushes buffered messages into your transaction.

30-second quick start

services.AddDbContext<AppDbContext>((sp, options) =>
{
    options.UseNpgsql(connectionString);
    options.UseOrionPatch(sp);   // hook the interceptor into your DbContext
});

services.AddOrionPatch()
    .UseEntityFrameworkCore<AppDbContext>()
    .UseSink<MyKafkaSink>();

In your DbContext.OnModelCreating:

protected override void OnModelCreating(ModelBuilder modelBuilder) =>
    modelBuilder.ApplyOrionPatchConfiguration();

Enqueue from service code:

_outbox.Enqueue(new OrderConfirmed(orderId, totalCents));
await _db.SaveChangesAsync(ct);   // outbox row commits with your other entity changes

What's in the box

  • OutboxEntityConfiguration — maps OutboxRow to OrionPatch_Outbox with covering indexes for the dispatcher's polling and lease-expiry queries.
  • EfCoreOutbox — IOutbox that buffers per-DbContext and binds via ConditionalWeakTable so the interceptor finds the right buffer without a service-provider hop.
  • OrionPatchSaveChangesInterceptor — six-override lifecycle (Saving / Saved / SaveChangesFailed and their async siblings) implementing a three-phase Flush / Commit / Revert so save failures re-buffer cleanly without double-inserting on retry.
  • EfCoreOutboxStorage — claim/complete/fail/dead-letter via ExecuteUpdateAsync single round-trips.
  • Provider-aware claim strategy:
    • SqlServer / PostgreSQL / MySQL — SkipLockedClaimStrategy with dialect-specific SQL. (v0.1.0 currently delegates these to the portable fallback; true SKIP LOCKED SQL lands in v0.2.)
    • SQLite + unknown providers — CompareAndSwapClaimStrategy (portable optimistic-concurrency claim).

Multi-DbContext

v0.1.0 supports one OrionPatch-bound DbContext per host. Calling UseEntityFrameworkCore<TDbContext> twice silently overrides the previous registration's IOutbox and IOutboxStorage services. First-class multi-DbContext support is on the v0.2 roadmap.

See the repo README for the full picture.

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

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Version Downloads Last Updated
0.2.0 16 6/3/2026
0.1.1 126 5/25/2026
0.1.0 80 5/24/2026