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Roadmaps8

Staged paths through a whole subject, from the first step to production.

• Remote Workstation Roadmap: Triple 2K, LG 4K and Edifier 2.1

  18 Oct 202616 minBeginner

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• Deployment Roadmap: Nginx, PM2, AWS Lambda, RDS, CloudWatch and Linode for Node Apps

  6 Oct 202635 minBeginner

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• System Design Roadmap: From Data Structures to Designing Netflix, Bitly and Uber

  6 Oct 202650 minIntermediate

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• How Websites Work: HTML, CSS, JavaScript, React and Next.js from Scratch to Mastery

  5 Oct 202655 minBeginner

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• NestJS Roadmap 2026: From First Module to Full Mastery

  3 Oct 202652 minBeginner

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• Node.js Backend Roadmap: Zero to Production

  19 Sept 202646 minBeginner

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• Docker QuickRef: Dockerfile, Images, Containers and Compose

  17 Sept 202612 minBeginner

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• GraphQL Roadmap: From Queries to Production

  12 Sept 202637 minIntermediate

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Queries & Explanations7

One question at a time, answered properly, with the reasoning left in.

• Not So Fast: Rate Limiting Explained

  28 Sept 202620 minIntermediate

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• Open the Book First: Retrieval-Augmented Generation Explained

  28 Sept 202610 minIntermediate

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• One Picture, Six Files: Web Image Formats Explained

  27 Sept 20265 minBeginner

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• Watts Decoded: What 400 W or 600 W on a Sound Bar Really Means

  27 Sept 20266 minBeginner

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• Backend Caching Strategies: From Zero to Production

  23 Sept 202643 minIntermediate

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• Agent Stack: A LangChain, LangGraph and CrewAI Cheatsheet

  22 Sept 202621 minIntermediate

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• CI/CD: From Commit to Production

  10 Jun 202618 minIntermediate

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How it works2

Everyday machines taken apart, from a flash chip to a cable under the sea.

• How an SSD Works: NAND Cells, the FTL, Garbage Collection and NVMe

  10 Oct 202611 minBeginner

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• How the Internet Works: From Your Phone to a Server and Back

  10 Oct 202610 minBeginner

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Cheatsheets28

Dense reference pages to keep open in a second tab while you work.

• DX Unpacked: Naming, Text Cases, Types and Error Handling for TypeScript Backends

  6 Oct 202617 minIntermediate

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• MCP Unpacked: The Model Context Protocol Explained, Connected and Built

  6 Oct 202616 minIntermediate

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• Protocols Unpacked: REST, GraphQL, gRPC, WebSocket, MQTT and More

  6 Oct 202614 minIntermediate

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• SEO for Frontend Developers: Meta Tags, Structured Data, Core Web Vitals and GA4

  6 Oct 202613 minBeginner

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• Linux Toolbox: 20 Modules of Commands You Will Actually Use

  5 Oct 202615 minBeginner

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• Nano Toolbox: Every Shortcut You Need in GNU nano

  5 Oct 20269 minBeginner

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• MongoDB Cheatsheet: Queries, Aggregation and Indexes in 15 Modules

  1 Oct 202613 minIntermediate

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• NestJS Cheatsheet: Modules, Providers, Pipes and Guards in 20 Modules

  1 Oct 202616 minIntermediate

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• PostgreSQL Cheatsheet: Queries, Indexes and EXPLAIN in 15 Modules

  1 Oct 202613 minIntermediate

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• Redis Cheatsheet: Data Types, Caching and Locks in 15 Modules

  1 Oct 202612 minIntermediate

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• TypeScript Cheatsheet: Types, Generics and Utility Types in 20 Modules

  1 Oct 202618 minIntermediate

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• BullMQ Cheatsheet: Queues, Workers, Jobs and Redis Settings

  30 Sept 20267 minIntermediate

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• Kafka vs RabbitMQ: A Decision Cheatsheet

  30 Sept 20267 minIntermediate

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• NestJS Observability Cheatsheet: Metrics, Logs, Traces and Alerts

  30 Sept 20267 minIntermediate

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• NestJS Request Lifecycle Cheatsheet: Middleware, Guards, Interceptors, Pipes and Filters

  30 Sept 202610 minIntermediate

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• Socket.IO Server Cheatsheet: Emits, Acks, Rooms and One Reply Contract

  30 Sept 202612 minIntermediate

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• TypeORM Migrations Cheatsheet: Zero Downtime Schema Changes

  30 Sept 20267 minIntermediate

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• Lodash Cheatsheet: Arrays, Collections, Objects, Timing and Native Swaps

  29 Sept 202614 minBeginner

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• moment-timezone Cheatsheet: Zones, DST, Formatting and Scheduling

  29 Sept 202614 minIntermediate

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• Number Toolbox: Every JavaScript Number Tool in Plain Words

  29 Sept 20269 minBeginner

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• Object Toolbox: Every JavaScript Object Tool in Plain Words

  29 Sept 202611 minBeginner

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• Set Toolbox: Every JavaScript Set Tool in Plain Words

  29 Sept 20267 minBeginner

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• String Toolbox: Every JavaScript String Tool in Plain Words

  29 Sept 20269 minBeginner

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• Symbol Toolbox: Every JavaScript Symbol Tool in Plain Words

  29 Sept 20267 minBeginner

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• Zod Cheatsheet: Schemas, Errors, Types and Zod vs Joi

  29 Sept 202616 minIntermediate

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• Array Toolbox: Every JavaScript Array Method in Plain Words

  28 Sept 202613 minBeginner

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• Functions Unpacked: Parameters, Arguments and Every Way to Call Them

  28 Sept 202612 minBeginner

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• Map Toolbox: Every JavaScript Map Tool in Plain Words

  28 Sept 202610 minBeginner

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What's new4

Fresh releases and specs, and what they change for code you already have.

• Deploy NestJS with systemd, Nginx and ufw on One Ubuntu Server

  10 Oct 202610 minIntermediate

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• Linux Troubleshooting Flowchart: Processes, Resources, Ports and Firewall

  10 Oct 20269 minIntermediate

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• React 19 Without the Jargon: What Changes in Your Code

  27 Sept 20265 minBeginner

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• GET's Promise, POST's Payload: The HTTP QUERY Method Explained

  3 Jul 20266 minIntermediate

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Tools & Technologies1

How the tools underneath actually work, so you can use them on purpose.

• Rust Backend Mastery: Tokio, Axum and SQLx in Practice

  9 Jun 202632 minAdvanced

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