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#authentication

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5 articles

System Design: Designing Stateless Authentication

System Design: Designing Stateless Authentication In a microservices architecture, you can't rely on server-side sessions (stored in memory/database) because every request might hit a different service instance. Stateles…

Apr 22, 20263 min read

Deep DiveBackend Systems Mastery

#system design#authentication#jwt

System DesignAdvanced

Stateless Auth: Managing JWT Blacklisting at Scale

Stateless Auth: JWT Revocation JWTs are often marketed as "stateless authentication", but the first real security requirement (logout, account disable, token theft response) immediately introduces state. If you do not de…

Apr 20, 20264 min read

Deep Dive

#jwt#authentication#security

System DesignAdvanced

System Design: Building a Session Management Platform

Sessions feel simple until they become a security boundary. A user logs in. The system gives them a token or cookie. Requests work. End of story. Then reality arrives: - one user is logged in on five devices - an access…

Apr 18, 202611 min read

Deep Dive

#system design#session management#authentication

System DesignAdvanced

System Design: Building an API Gateway Platform

An API gateway is the front door to your backend. It receives traffic before your services do, which makes it powerful and dangerous. A good gateway centralizes routing, authentication, rate limiting, request shaping, ob…

Apr 8, 20268 min read

Deep Dive

#system design#api gateway#rate limiting

JavaAdvanced

Spring Security OAuth2 and JWT: Production Implementation Guide

Spring Security is one of the most powerful and most misunderstood frameworks in the Java ecosystem. Its flexibility is its strength — and its complexity. Misconfigured security is worse than no security, because it give…

Jun 3, 20257 min read

Deep Dive

#spring security#oauth2#jwt