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.NET 17 Feb 2026

Three Predicates, One Flag

Three components decide independently whether a route needs authentication, only one of them consults auth.enabled - and the combination that turns a public route into a 403.

Microservices 24 Dec 2025

Sign-In Is Impossible If You Capitalise

Trill's User constructor stores the name trimmed but not lower-cased, and the repository looks it up lower-cased. Any account with a capital letter in its name can never be found, which means it can never sign in - and the test fixture is all lowercase.

.NET 13 Sep 2025

Revoking the Irrevocable

DShop.Common makes a stateless JWT revocable with a Redis deny-list and a per-request round-trip - plus an iat claim in milliseconds and two validators that disagree.

.NET 10 Jul 2025

JWTs and the Blacklist Problem

Convey's auth packages in two acts - a JWT layer that turns one config section into token issuing and validation, and the uncomfortable question every stateless system meets on logout day.

.NET 16 Jun 2025

JWTs, Refresh Tokens, and Revocation Without the Ceremony

The FastEndpoints.Security package covers the token lifecycle end to end - creation with symmetric or RSA keys, an abstract refresh-token service that is secretly an endpoint, and a revocation middleware that makes you pay the lookup tax honestly. Part 8 of FastEndpoints in Depth.

.NET 02 Apr 2025

Logging In with CAS When Everyone Uses OAuth

A 2004-vintage SSO protocol wired into ASP.NET Core - ticket validation, roles derived from the database at login time, and single sign-out through a WordPress front door.

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Agentic AI & Cloud Engineer · multi-agent systems, RAG and MCP on AWS

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