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Engineering

Supabase Auth vs Authgear for Next.js: Which Should You Choose?

Supabase Auth and Authgear are both production-ready for Next.js App Router — but they take fundamentally different approaches to authentication. This guide gives you a fair, practical comparison with a feature table, setup code for both, and clear guidance on when to choose each.

March 27, 2026
Engineering

Next.js Session Management: Cookies, JWTs, and Server Sessions (2026)

Next.js session management is more nuanced than in a traditional server-rendered app. This guide covers stateful vs stateless sessions, secure cookie attributes, JWT signing with jose, token rotation, sliding sessions, and how to read session data across Server Components, Route Handlers, and Middleware.

March 27, 2026
Engineering

Next.js Authentication: Complete Guide for App Router (2026)

The App Router moves authentication to the server by default — but "moved to the server" doesn't mean "solved." This guide covers the full picture, from picking the right approach to writing your first protected Server Component, with working TypeScript code throughout.

March 27, 2026
Engineering

Next.js API Route Authentication: How to Secure Your Endpoints

API routes in Next.js work differently from page protection — Route Handlers must return HTTP status codes, not redirects. This guide covers session cookies, Bearer tokens, RBAC, and Server Actions with complete TypeScript examples.

March 26, 2026

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