Blog
Practical guides, tutorials, and cheat sheets for developers.
Understanding JWTs: A Developer's Guide to JSON Web Tokens
Learn how JSON Web Tokens work, how to decode them, and common security pitfalls to avoid in your applications.
Regex Cheat Sheet: Patterns Every Developer Should Know
A practical reference for regular expression syntax, common patterns, and real-world examples you'll actually use.
The Practical cURL Guide: From Basic Requests to Advanced Usage
Master cURL with practical examples for GET, POST, authentication, file uploads, and debugging HTTP requests.
CSS Flexbox: A Visual Guide to Every Property
Learn CSS Flexbox with practical examples for centering, navbars, card grids, and responsive layouts. Includes a quick reference table and common patterns.
How to Validate JSON: The 7 Most Common Errors and How to Fix Them
A practical guide to JSON syntax rules, the most common validation errors, and how to debug malformed JSON fast.
How to Write a .gitignore File: Patterns, Templates, and Common Mistakes
Learn .gitignore syntax, wildcard patterns, and ready-to-use templates for Node.js, Python, Go, and Rust. Avoid accidentally committing secrets and build artifacts.
Base64 Encoding Explained: How It Works and When to Use It
Understand how Base64 encoding works, where it's used (JWTs, data URIs, APIs), and code examples in JavaScript, Python, Go, and the command line.
CSS Grid Layout: The Complete Guide with Examples
Learn CSS Grid with practical examples for responsive card grids, dashboard layouts, photo galleries, and named areas. Includes a quick reference table and common patterns.
Dockerfile Best Practices: Smaller, Faster, More Secure Images
Learn multi-stage builds, layer caching, security hardening, and the common Dockerfile mistakes that silently bloat your containers.
JSON Schema: A Practical Guide to Validating JSON Data
Learn JSON Schema from scratch — types, required fields, nested objects, arrays, $ref, composition, and conditional validation with real-world examples.
Password Security: What Developers and Users Need to Know
Understand password entropy, how attacks work, hashing vs encryption, and implementation best practices with code examples in Node.js, Python, and Go.
Understanding UUIDs: Versions, Formats, and When to Use Each
Learn how UUIDs work, the differences between v1, v4, v5, and v7, and when to use each version. Includes code examples and database performance tips.
Markdown Syntax Cheat Sheet: Every Feature You Need to Know
A complete Markdown reference covering headings, formatting, links, code blocks, tables, task lists, GitHub-flavored features, and common mistakes.
Docker Compose: A Practical Guide to Multi-Container Apps
Learn Docker Compose with real-world examples for Node.js, PostgreSQL, Redis, and WordPress stacks. Covers services, volumes, networks, health checks, and common mistakes.
YAML Syntax Guide: From Basics to Gotchas
Learn YAML syntax, data types, multiline strings, anchors, and the notorious Norway problem. Includes real-world examples for Kubernetes, GitHub Actions, and Docker Compose.