Tutorials

Learn to build SaaS.

Practical tutorials on building modern web applications.

12 min read

Slash Commands and Subagents in Claude Code: Building Reusable Workflows Beyond CLAUDE.md

Turn Claude Code into an orchestration layer. Define tasks once with slash commands and subagents, then invoke them repeatedly—no re-explanation needed.

aiautomation

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13 min read

Multi-Tenant Architecture in a Django + FastAPI Stack: Schema, Row, and Database Isolation Trade-offs

Row, schema, or database isolation: trade-offs, migration costs, and how to choose the right PostgreSQL strategy before it's too late.

djangopostgressecurity

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12 min read

Vite vs Next.js: You're Probably Comparing the Wrong Two Things

They're not competitors—Vite is a build tool, Next.js is a framework. Learn what layer each sits on and how to actually choose between them.

nextjsreactperformance

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8 min read

PostgreSQL List Databases: The `\l` Command and Every Alternative

Master listing PostgreSQL databases with `\l`, SQL queries, and CLI flags. Covers output columns, permissions, and workarounds for restricted contexts.

postgresautomation

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12 min read

Git Remove Untracked Files: The Safe Way to Purge Build Artifacts and Junk

Master git clean with preview mode, selective filtering, and safety guards. Remove build artifacts without losing uncommitted work.

automationnodejs

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12 min read

FastAPI vs Flask: A Decision Framework, Not a Popularity Contest

API-first service? FastAPI. Server-rendered web app? Flask. Cut through the noise with a decision framework, not feature tables.

fastapipython

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12 min read

React Server Components: A Decision Framework for Server/Client Boundaries in Next.js 15

Stop reflexively adding 'use client' to every component. Learn the decision framework for server/client boundaries in Next.js 15 with production examples.

nextjsreactperformance

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11 min read

Next.js Middleware: What It's For, What It Isn't, and How to Ship It Correctly

Master what Next.js middleware is, what it isn't, and when to use it. Learn the architecture judgment that keeps middleware fast and maintainable.

nextjsperformancesecurity

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9 min read

FastAPI Background Tasks for LLM Jobs: A Complete Polling Pattern with Next.js

Move long LLM calls out of request path with FastAPI BackgroundTasks and job polling. Return 202 with job ID, let clients poll status until done.

fastapiainextjs

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