Most legacy .NET applications don't need a rewrite — they need a plan. Here's how to move a real enterprise codebase from .NET Framework to modern .NET without stopping feature work: async-first data access, structured logging, Polly resilience, health checks, and the strangler fig pattern done right.

Uncle Bob described a multi-agent pipeline where human interaction decreases at each stage — Specifier, Coder, Refactorer, Architect — transforming informal requirements into mutation-tested, property-verified code. Here's what each stage does and how to implement it in .NET.

IMemoryCache is fast but per-server. IDistributedCache is shared but slow and full of boilerplate. .NET 9's HybridCache combines both into one API — two-tier caching, built-in stampede protection and tag invalidation. Here's how to use it properly.

Before/after demo for migrating enterprise .NET apps to modern .NET — async, DI, EF Core Code First, Polly v8, health checks, Serilog, and the Strangler Fig pattern. Companion repo for the article.

A multi-agent pipeline — Specifier, Coder, Refactorer, Architect — that turns informal requirements into mutation-tested, property-verified .NET code. Companion repo for the article.

Two-tier caching with built-in stampede protection and tag invalidation, replacing the IMemoryCache/IDistributedCache split with one API. Companion repo for the article.