Most modern auth systems eventually hit the same two failure modes. Problem 1 – JWT-based auth systems JWT looks perfect on paper: stateless, self-contained, fast verification. In real production auth systems, the moment you need instant revocation, logout, permission changes, or response to token theft, the model breaks. You are forced to introduce a denylist (Redis or database). That destroys the original “stateless” benefit and adds a lookup on every request. Signature malleability and JWKS cache-miss flooding create additional operational and security risks. This is one of the most…

#programming #reddit #dev #auth #jwt #gnap #oauth #problems