Tutorials

Step-by-step guides with working code. Ship something by the end.

2026-03-29

JWT vs Session Authentication: Pick Wrong and You'll Pay Later

JWT vs session authentication: sessions for monoliths, JWT for microservices, hybrid when unsure. The decision framework most tutorials skip.

2026-03-26

Agentic Coding Workflows: One Agent vs. Many (2026 Guide)

Agentic coding workflows: use multi-agent when tasks span isolated areas and take 2+ hours. For most work, one agent wins. A practical framework.

2026-03-22

API Authentication Patterns: The 2am JWT Revocation Problem

Not sure which API authentication pattern to use? This guide covers JWT vs sessions, security best practices, and when each approach actually makes sense.

2026-03-20

Server Components Explained: The Real Trade-offs Nobody Mentions

Not the React marketing version. When server components help, when they hurt, and 5 questions to ask before you migrate anything.

2026-03-18

PostgreSQL Performance Tuning: What Actually Moves the Needle

Skip the 50-parameter tuning guides. Here are the 3-4 PostgreSQL performance changes that actually matter: indexes, query patterns, and connection pooling.

2026-03-15

JavaScript Bundle Analyzer: Find Bloat Without Guessing

Set up bundle analyzers for Webpack, Vite, and Rollup in minutes. Read the treemap, spot bloat patterns, and fix them with concrete steps.

2026-03-14

Building with AI APIs: What Breaks After npm install

Skip the 'which API is best' debate. Streaming, error handling, and multi-provider patterns that matter when building with AI APIs in production.

2026-03-10

AI Code Review: 82% Use It — So Why Is Quality Down in 2026?

82% of teams use AI code review tools. Most are doing it wrong. Here's the workflow that keeps humans in the driver's seat — and why that matters.

2026-03-09

Cursor Automations Tutorial: Triage 3AM Incidents While You Sleep

Set up three real Cursor Automations: git push security review, Slack bug triage, and PagerDuty incident response. Copy-paste prompts and configs included.

2026-03-08

Prompting for Developers: Why Your AI Code Doesn't Compile

Stop chatting with your AI. Start specifying. Learn how senior devs use the Compiler Mental Model and Spec-First Workflow to get production-quality code.