Topic
Performance & Data
Databases, telemetry, ingestion and the measurements behind a system that is actually faster.
ArrayPool Across await: Leases, Ownership Transfer and Real Savings
Reproduce the HELLO-to-WORLD overwrite with ArrayPool.Shared, end leases at the right event, transfer ownership through a bounded queue and measure what pooling really saves.
Parsing TCP Frames in .NET: Cursors, Backpressure and Buffer Lifetimes
Build a framed PipeReader loop that survives split headers, see why Pipe backpressure counts examined bytes, and decide from measurements when copying beats a borrowed slice.
Why This Total Changed: Lineage That Survives Retries and Corrections
Give every derived total an identity from its rule and exact source versions, record each contribution, and correct sources by replacement, so retries count once and changes explain themselves.
When SQL Monitoring Becomes the Workload: Scans, Viewers and Locks
A four-row dashboard tile can out-read the business it watches and queue writers behind its own lock wait. Measure the per-call cost, share one snapshot and bound the exporter.
A Performance Diagnosis That Survives the Allocation Explanation
Allocation fell 77% and latency did not move. Test competing explanations on a real ASP.NET Core and SQLite endpoint, read the statement's work, and hand over a decision.
Measure the AI Review Queue Without Inventing Reviewer Effort
Delivery times are not lead times, elapsed is not effort, and five approval notifications can be three accepted tasks. Measure the review queue honestly, then model capacity.
Telemetry Is a Schema: One Contract for a .NET AI Platform
A library upgrade renamed gen_ai.system and zeroed a dashboard. Build a .NET telemetry contract that survives GenAI convention changes, retries and cardinality limits.
One Million Events and Three Ways a Consumer Quietly Breaks
Duplicates after a lost acknowledgement, events skipped by a high-water checkpoint, and old events reapplied after retention: why totals miss them and how one transaction prevents them.
Trace One Order Across HTTP, a Queue and Retries in .NET 10
Make an ASP.NET Core 10 service explain itself before the first incident: propagate context through a queue, keep failed retries visible, and know what survives when traces are sampled out.
What Does a Correct RAG Answer Cost? Count Retries, Review and Setup
Per-call price ranks RAG pipelines wrongly. Divide all work by accepted tasks, keep missing usage unknown, and see how volume and question mix change the winner.
The Observer Effect: What .NET Telemetry Costs Before Sampling
A sampled-out span can still build its payload, and a stalled exporter silently drops spans. Measure both with OpenTelemetry .NET and add the guards and counters that fix them.
Moving Large Datasets with EF Core: Bounded, Resumable Batches
Export millions of rows through an EF Core 10 service without skipping or duplicating any: a frozen selection, keyset pages, a bounded pipeline and a receipt that commits with the data.