Rolling Update vs Blue‑Green Deployment: Preserving In‑Proc Session State During Zero‑Downtime Migration
Goal Migrate a small ASP.NET Core application to a new version without any service interruption while keeping user session data that is stored in‑memory. Constraint The application relies on in‑proc session state, which is lost whenever the worker process recycles. Any migration strategy must therefore avoid a process recycle or externalize session state. Ap