Guides

7 posts in this category.

August 10, 2026Guides10 min read

What Authentication Actually Costs, Both Ways

The vendor invoice and the maintenance bill, with real numbers on both sides, and the question that actually decides which one you pay.

August 10, 2026Guides9 min read

Stripe retries for three days, so your handler runs twice. The fix is usually smaller than the event-ID table everyone recommends.

August 10, 2026Guides13 min read

What self-hosted authentication means, what it costs to run, and the Auth.js and Prisma code that ships in a free Next.js starter kit.

August 10, 2026Guides10 min read

What the Next.js 16 rename changes for route protection, the Auth.js code that runs in production, and the mistake we shipped.

August 10, 2026Guides8 min read

The code is the easy half. The migration is decided by whether you can take your password hashes with you, and that answer differs by provider.

July 26, 2026Guides3 min read

A practical checklist for picking a starter kit you will not regret three months in.

July 25, 2026Guides1 min read

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