01 / Writing

Notes from the build.

Architecture, .NET, cloud, AI, and graph databases — written from production, not theory.

All .NET 28 AI 15 C# 12 Graph Databases 9 Architecture 8 NebulaGraph 8 ASP.NET Core 7 .Net Core 6 AI Agents 5 Postgresql 5 EF Core 4 MCP 4 Agentic Coding 3 Claude Code 3 Edge AI 3 Graph Database 3 IoT 3 Knowledge Graph 3 LLM 3 RAG 3 Semantic Kernel 3 Vector Search 3 nGQL 3 Agent Framework 2 Agent Memory 2 ArangoDB 2 Azure 2 Blazor 2 Claude 2 Developer Tools 2 OpenAI 2 Security 2 Semantic Search 2 Software Engineering 2 Tech 2 TimescaleDB 2 .Net Core Push Notification 1 AWS Deployment 1 AWS Lambda 1 Access Management 1 Agents 1 Agile 1 Anthropic 1 Arduino 1 Authentication 1 Benchmark 1 CDK 1 CORS 1 CQRS 1 Code Quality 1 Code Review 1 Context Engineering 1 Custom Claim 1 Data Engineering 1 Databases 1 ESP32 1 Embedded 1 Embeddings 1 EntraId 1 Function Calling 1 IAC 1 IBM MQ 1 Infrastructure as Code 1 JWT 1 MediatR 1 Message Queue 1 Microsoft.Extensions.AI 1 Multi-Agent 1 MySQL 1 Neo4j 1 Npgsql 1 Observability 1 OpenTelemetry 1 Postgres 1 Productivity 1 Raspberry Pi 1 Recommendation Systems 1 Remote Work 1 Research 1 Rust 1 Scrum 1 SignalR 1 Software Architecture 1 Team Leadership 1 Technical Debt 1 Testing 1 WebMCP 1 Windows Universal App 1 pgvector 1

Featured · October 23, 2026 · 6 min

PostgreSQL jsonb with EF Core 10: Mapping, Indexing and Querying Document Columns

Mapping PostgreSQL jsonb with EF Core 10 complex types, run against PostgreSQL 18: what LINQ translates to, which indexes the planner actually uses, the traps (JsonContains, null keys, virtual columns) and when jsonb beats a separate table.

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October 5, 2026 · 7 min

Edge AI with .NET, Part 4: Time Series That Outlives the Hardware

Sensor readings are more valuable than the devices that produce them. This instalment shows how to model IoT meter data in TimescaleDB 2.29, map it with EF Core 10, and run a .NET anomaly-detection worker that survives meter swaps, tariff changes, and dead cameras.

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October 5, 2026 · 7 min

Building an Agentic System in .NET, Part 5: Designing an Agent Bus in ASP.NET Core

Design a production agent bus in ASP.NET Core 10 with EF Core, SignalR and PostgreSQL, covering agent registration, topic channels, at least once delivery, claim semantics with row level locking, and self contained hand off payloads.

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June 26, 2026 · 6 min

Two Bugs Hiding in Our OpenTelemetry Pipeline: CORS Preflights and the NUL Byte That Killed a Whole Batch

Two silent production bugs in an OTLP observability pipeline. One blocked every browser telemetry client, the other dropped whole log batches. Here is the root cause, the fix and the repro for each.

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October 20, 2025 · 16 min

Building a Retrieval-Augmented Generation (RAG) System in .NET

How we built a complete RAG pipeline in C#, from tokenization and ONNX embeddings to vector search in PostgreSQL with PgVector and local LLM inference with LLamaSharp. No Python anywhere.

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