Stratara.ServiceDefaults 4.0.1

Prefix Reserved
dotnet add package Stratara.ServiceDefaults --version 4.0.1
                    
NuGet\Install-Package Stratara.ServiceDefaults -Version 4.0.1
                    
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="Stratara.ServiceDefaults" Version="4.0.1" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Stratara.ServiceDefaults" Version="4.0.1" />
                    
Directory.Packages.props
<PackageReference Include="Stratara.ServiceDefaults" />
                    
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 Stratara.ServiceDefaults --version 4.0.1
                    
#r "nuget: Stratara.ServiceDefaults, 4.0.1"
                    
#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 Stratara.ServiceDefaults@4.0.1
                    
#: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=Stratara.ServiceDefaults&version=4.0.1
                    
Install as a Cake Addin
#tool nuget:?package=Stratara.ServiceDefaults&version=4.0.1
                    
Install as a Cake Tool

Stratara.ServiceDefaults

Derived. The behaviour described here is specified under openspec/specs/. Those specifications are the source; this page explains and illustrates them.

License: MIT.

Cross-host observability defaults for the Stratara stack. Reference from every host (API, worker) to get OpenTelemetry + Serilog wired up with sensible defaults.

What's in the box

Extension Purpose
ConfigureOpenTelemetry Logging + metrics + tracing with HTTP, EF Core, RabbitMQ, runtime instrumentation; OTLP exporter wired up automatically when OTEL_EXPORTER_OTLP_ENDPOINT is set. Accepts optional MeterProviderBuilder / TracerProviderBuilder callbacks for host-specific extras.
ConfigureSerilog Structured logging with destructuring attributes, async console sink, OTLP sink (gRPC or HTTP/Protobuf based on OTEL_EXPORTER_OTLP_PROTOCOL), dev-mode log cleanup at {Path.GetTempPath()}/stratara-logs/{service-name}.log — the OS temp directory, so not literally /tmp on Windows or macOS.
ConfigureSerilogBootstrapLogger Sets up Log.Logger as a bootstrap logger before the host is built, so early-startup errors surface to the console.

Quick start

builder.ConfigureOpenTelemetry();
builder.ConfigureSerilog();

It deletes your development log file on start-up

In the Development environment only, configuring Serilog deletes the current log file before opening it: %TEMP%/stratara-logs/{OTEL_SERVICE_NAME}.log, where the service name falls back to Unknown when OTEL_SERVICE_NAME is unset. The intent is a clean file per debugging session rather than one that grows across dozens of restarts.

Two consequences worth knowing before they cost you an hour:

  • A crash you wanted to read is gone the moment you restart to reproduce it. Copy the file before restarting, or point the sink elsewhere for that session.
  • Two development services with no OTEL_SERVICE_NAME share Unknown.log and delete each other's. Set the variable per service.

Outside Development nothing is deleted.

Sibling packages

  • Stratara.EventSourcing.WorkerDefaults — one-stop AddBackendServices / AddXxxWorkerServices composites that wire the framework's mediator + outbox + projections + sagas stack.
  • Stratara.ServiceDefaults.AspNetCore — ASP.NET-specific extras: AddDefaultHealthChecks + MapDefaultEndpoints (/health, /alive) and ASP.NET request OTel instrumentation.

Dependencies

  • Stratara.Shared — diagnostics base (ApplicationDiagnostics.Activity.SourceName).
  • OpenTelemetry runtime + exporter packages.
  • Serilog sinks (Console, File, Async, OpenTelemetry).
  • Destructurama.Attributed for destructuring conventions.
  • Microsoft.Extensions.Http.Resilience + Microsoft.Extensions.ServiceDiscovery.

Prerelease dependencies. This package transitively pulls in two prerelease OpenTelemetry instrumentation packages that have no stable release yet: OpenTelemetry.Instrumentation.EntityFrameworkCore (beta) and RabbitMQ.Client.OpenTelemetry (RC). Both ride the stable OpenTelemetry 1.15.x core. NU5104 is suppressed in this csproj with that justification — consumers inherit the prerelease deps transitively. We will swap to GA as soon as the vendors ship stable.

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.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Stratara.ServiceDefaults:

Package Downloads
Stratara.ServiceDefaults.AspNetCore

ASP.NET Core extensions on top of Stratara.ServiceDefaults — default health checks, /health and /alive endpoints, and ASP.NET request OpenTelemetry instrumentation. Reference from every API host.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
4.0.1 44 9/2/2026
4.0.0 112 8/31/2026
4.0.0-preview.1 43 8/31/2026
3.4.0 93 8/28/2026
3.3.0 68 8/25/2026
3.2.3 73 8/22/2026
3.2.2 76 8/14/2026
3.2.1 428 8/2/2026
3.2.0 72 7/18/2026
3.1.7 86 7/1/2026
3.1.6 506 6/22/2026
3.1.5 84 6/22/2026
3.1.4 94 6/15/2026
3.1.3 94 6/10/2026
3.1.2 98 6/5/2026
3.1.1 174 6/1/2026
3.1.0 86 5/30/2026
3.0.23 87 5/28/2026

### Added

- **Bundles about one aggregate are now applied one at a time within a process, a handler can say
 "not yet", and the workers' parallelism is configurable.** The projection worker and the saga
 worker open one consumer per processor on a shared queue, so two bundles published milliseconds
 apart — the fact that creates an entity and the first fact about it — landed on two consumers and
 ran at the same time, and whichever finished first won. A projection that then found no row for
 the follow-up could only warn and acknowledge a fact it never applied, or throw and have the
 bundle discarded; either way the read model lost the fact until a replay. The command worker has
 never had this problem, because it takes a per-aggregate lock before it runs a command.

 Both workers now take the same lock, keyed on the streams the bundle's events belong to. Bundles
 about different aggregates still run in parallel; bundles about one aggregate queue behind each
 other. The guarantee is per process — two replicas consuming the same subscription do not
 serialise against each other — and the delivery guarantee now says so explicitly.

 The lock serialises but does not order, so the residual case gets a second chance:
 `PrecedingFactMissingException(streamId, eventTypeName)` in `Stratara.Abstractions` is the one
 exception the workers retry — five attempts from 100 ms doubling, about three seconds in all,
 under the new named policy `ResilienceNames.PrecedingFact`, with every aggregate lock released
 between attempts so the creating fact can land in the gap. Once the retries are exhausted the
 bundle fails as any unhandled failure does, and the warning logged on each attempt
 (`104_010` for projections, `110_005` for sagas) names the stream and the event type. Any other
 exception fails the bundle on the first attempt, as before.

 `Projections:DegreeOfParallelism` and `Sagas:DegreeOfParallelism` set the number of consumers each
 worker opens; a value that is not a positive number means the processor count, and `1` gives a
 worker that applies every bundle in the order the transport delivers it.

 A consumer that changes nothing gets the serialisation and the default parallelism it had. A
 consumer that implements `IMessageBus` itself is unaffected: the retry runs inside the worker
 before the transport sees an outcome. `BucketLockPool`, previously internal to the mediator, is
 now public in `Stratara.Abstractions` so that every worker takes the same lock from the same
 place; the mediator's own copy is gone.

### Changed

- **A published version now announces itself in the repository.** The release workflow gained a
 third job that creates the GitHub release entry for the tag once the packages have reached
 nuget.org, with the changelog section for that version as its notes — the same section the
 packages already carry as their release notes. A prerelease tag is marked as one, so it does not
 displace the current stable version. Until now the release list was maintained by hand and had
 fallen behind: 4.0.0 was on nuget.org while the repository still presented 3.4.0 as current.
 Nothing about what publishes, when, or on whose approval has changed.