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2026-05-01 csharp dotnet dotnet-11

How to write integration tests against a real SQL Server with Testcontainers

A complete guide to running ASP.NET Core integration tests against a real SQL Server 2022 using Testcontainers 4.11 and EF Core 11: WebApplicationFactory wiring, IAsyncLifetime, swapping the DbContext registration, applying migrations, parallelism, Ryuk cleanup, and CI gotchas.

2026-05-01 dotnet-11 vstest newtonsoft-json

VSTest drops Newtonsoft.Json in .NET 11 Preview 4 and what breaks if you relied on it transitively

.NET 11 Preview 4 and Visual Studio 18.8 ship a VSTest that no longer flows Newtonsoft.Json into your test projects. Builds that quietly used the transitive copy will break with a single PackageReference fix.

2026-04-30 claude-code ai-agents aws-bedrock

Claude Code 2.1.122 Lets You Pick a Bedrock Service Tier From an Env Var

Claude Code v2.1.122 adds the ANTHROPIC_BEDROCK_SERVICE_TIER environment variable, sent as the X-Amzn-Bedrock-Service-Tier header. Set it to flex for a 50 percent discount on agent calls or priority for faster responses, without touching SDK code.

2026-04-30 csharp dotnet dotnet-11

How to add per-endpoint rate limiting in ASP.NET Core 11

A complete guide to per-endpoint rate limiting in ASP.NET Core 11: when to pick fixed window vs sliding window vs token bucket vs concurrency, how RequireRateLimiting and [EnableRateLimiting] differ, partitioning by user or IP, the OnRejected handler, and the distributed deployment pitfall everyone hits.

2026-04-30 llm ai-agents anthropic-sdk

How to Call the Claude API from a .NET 11 Minimal API with Streaming

Stream Claude responses from an ASP.NET Core 11 minimal API end-to-end: the official Anthropic .NET SDK, TypedResults.ServerSentEvents, SseItem, IAsyncEnumerable, cancellation flow, and the gotchas that buffer your tokens silently. With Claude Sonnet 4.6 and Opus 4.7 examples.

2026-04-30 csharp dotnet dotnet-11

How to use the new System.Threading.Lock type in .NET 11

System.Threading.Lock arrived in .NET 9 and is the default synchronization primitive on .NET 11 and C# 14. This guide shows how to migrate from lock(object), how EnterScope works, and the gotchas around await, dynamic, and downlevel targets.

2026-04-30 csharp dotnet dotnet-11

How to write a source generator for INotifyPropertyChanged

A complete guide to building your own incremental source generator for INotifyPropertyChanged in C# 14 and .NET 11: the IIncrementalGenerator pipeline, marker attributes, partial-class output, the SetProperty pattern, and how to stay AOT-friendly.

2026-04-29 mcp claude-cowork claude-code

cowork-terminal-mcp: Host Terminal Access for Claude Cowork in One MCP Server

cowork-terminal-mcp v0.4.1 bridges Claude Cowork's sandboxed VM to your host shell. One tool, stdio transport, hard-pinned Git Bash on Windows.

2026-04-29 claude-code ai-agents cli

Export Claude Code Conversations to PDF With jsonl-to-pdf

A practical guide to turning the JSONL files Claude Code writes under ~/.claude/projects/ into shareable PDFs using jsonl-to-pdf, with sub-agent nesting, secret redaction, compact and dark themes, and CI-friendly batch recipes.

2026-04-29 llm ai-agents anthropic-sdk

How to Add Prompt Caching to an Anthropic SDK App and Measure the Hit Rate

Add prompt caching to a Python or TypeScript Anthropic SDK app, place cache_control breakpoints correctly, and read cache_read_input_tokens and cache_creation_input_tokens to compute a real hit rate. With pricing math for Claude Sonnet 4.6 and Opus 4.7.