B-trees and database indexes — PlanetScale

B-trees are used by many modern DBMSs. Learn how they work, how databases use them, and how your choice of primary key can affect index performance.

Caching — PlanetScale

Every time you use a computer, the cache is working to ensure your experience is fast.

Cerebras

Cerebras is the go-to platform for fast and effortless AI training. Learn more at cerebras.ai.

How to Secure Environment Variables for LLMs, MCPs, and AI Tools Using 1Password or Doppler

Stop hardcoding API keys in MCP configs and AI tool settings. Learn how to use 1Password CLI or Doppler to inject secrets just-in-time for Claude, Cur...

Java, Maven, & Gradle: OS Setup & Project-Level Usage

Install Java, Maven, Gradle at OS & project levels. Learn common commands for consistent builds & development workflows.

Attempting to Design a Back-end with Cleaner Architecture Rules and Boundaries

How I'm learning to build with better software architecture design principles (while 'moving fast and breaking things').

repo-tokens-calculator

CLI token counter (Python + tiktoken + uv) with pretty summary

Book Finder (findmybook.net)

Book search and recommendation engine with OpenAI integration

Troubleshooting Java, Second Edition

Laurentiu Spilca

Learn how to quickly work out what your Java code is doing so you can understand when and why it misbehaves. Searching for bugs, detangling messy lega...

A Simple Guide to Retrieval Augmented Generation

Abhinav Kimothi

Everything you need to know about Retrieval Augmented Generation in one human-friendly guide. Augmented Generation—or RAG—enhances an LLM’s available ...

AI Agents in Action

Micheal Lanham

In AI Agents in Action, you'll learn how to build production-ready assistants, multi-agent systems, and behavioral agents. You'll master the essential...