Start Debugging

Tag: opentelemetry

9 posts

2026-09-30 aspire dotnet opentelemetry

Aspire 13.6 Dashboard Keeps Your Last Ten Runs in SQLite

Aspire 13.6.0 makes the dashboard persistent: resource snapshots and telemetry go into a SQLite database, the AppHost keeps up to ten runs per application, and completed runs stay browsable read-only. Here is how the Run, Resume, and None modes work and how to configure the standalone dashboard.

2026-09-22 dotnet opentelemetry observability

OpenTelemetry .NET 1.19.1 fixes the wildcard NotSupportedException on net8.0

OpenTelemetry 1.19.0 switched its wildcard source regex to RegexOptions.NonBacktracking, which throws on net8.0 once you register enough sources. 1.19.1, released on September 21, 2026, goes back to a compiled regex with a match timeout.

2026-09-21 aspnet-core dotnet-10 logging

How to add the current user id to every log entry in ASP.NET Core

A BeginScope middleware misses the exception handler's error log and the Request finished line. Register an ILogEnricher that reads the user from IHttpContextAccessor, open a scope only when work leaves the request, and watch out for Serilog's AddSerilog silently cancelling enrichment.

2026-07-26 aspire dotnet aspnetcore

How to add Aspire to an existing ASP.NET Core solution without restructuring it

Add Aspire 13.4 to a brownfield ASP.NET Core solution by adding two new projects and three lines per service: aspire init, AppHost wiring with AddProject and WithReference, keeping your existing launchSettings.json and connection strings, and the resilience, health-endpoint, and proxy gotchas that bite on day one.

2026-06-06 dotnet dotnet-11 opentelemetry

.NET 11 Gives MemoryCache First-Class OpenTelemetry Metrics

.NET 11 Preview 4 ships a built-in meter for Microsoft.Extensions.Caching.Memory, so cache hit ratio and evictions flow into OpenTelemetry without a background poller.

2026-06-05 migration serilog opentelemetry

Migrate from Serilog to OpenTelemetry logging in .NET 11

A step-by-step guide to moving a .NET 11 app off Serilog and onto OpenTelemetry logging: the low-risk Serilog.Sinks.OpenTelemetry bridge, the full Microsoft.Extensions.Logging cut-over, what breaks, how to verify, and how to roll back.

2026-05-01 csharp dotnet dotnet-11

How to use OpenTelemetry with .NET 11 and a free backend

Wire OpenTelemetry traces, metrics, and logs into a .NET 11 ASP.NET Core app with the OTLP exporter, then ship them to a free, self-hosted backend: the standalone Aspire Dashboard for local dev, Jaeger and SigNoz for self-hosted production, and the OpenTelemetry Collector when you need both.

2026-04-25 aspire opentelemetry security

Aspire 13.2.4 Patches CVE-2026-40894: Baggage Header DoS in OpenTelemetry .NET

Aspire 13.2.4 ships an OpenTelemetry bump for CVE-2026-40894, a Gen0 allocation amplification in baggage, B3, and Jaeger propagator parsing. Update OpenTelemetry.Api and OpenTelemetry.Extensions.Propagators to 1.15.3 even if you are not on Aspire.

2026-04-12 aspnet-core dotnet-11 opentelemetry

ASP.NET Core 11 Ships Native OpenTelemetry Tracing: Drop the Extra NuGet Package

ASP.NET Core in .NET 11 Preview 2 adds OpenTelemetry semantic attributes directly to HTTP server activity, removing the need for OpenTelemetry.Instrumentation.AspNetCore.