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Java 25 is here — and it's actually worth upgrading for
Java8 min read

Java 25 is here — and it's actually worth upgrading for

Scoped Values are production-ready, object headers just got smaller, and you can finally write code before super(). Here's why Java 25 is the LTS release you shouldn't skip.

Andres Tascon
Andres TasconMay 18, 2026
How to properly build an MCP server
AI12 min read

How to properly build an MCP server

A practical guide to building Model Context Protocol servers — covering tools, resources, and prompts, plus the rules that separate production servers from proof-of-concepts.

Andres Tascon
Andres TasconMay 13, 2026
ACID: Four letters that keep your data safe
Architecture10 min read

ACID: Four letters that keep your data safe

A practical guide to Atomicity, Consistency, Isolation, and Durability — with SQL examples and a bank transfer walkthrough showing all four properties in action.

Andres Tascon
Andres TasconMay 4, 2026
HashCode vs Equals in Java: The Contract Every Developer Must Understand
Java11 min read

HashCode vs Equals in Java: The Contract Every Developer Must Understand

Understand what hashcodes really are, how HashMap lookups work under the hood, and why the hashCode-equals contract is the foundation of every cache and collection in your application.

Andres Tascon
Andres TasconApril 28, 2026
Immutability in Java: Why Your Objects Should Be Stone Tablets, Not Whiteboards
Java12 min read

Immutability in Java: Why Your Objects Should Be Stone Tablets, Not Whiteboards

Learn what immutability really means in Java, how to make objects immutable (the five rules), why Strings work the way they do, and every way to make collections immutable — with tradeoffs.

Andres Tascon
Andres TasconApril 21, 2026
Domain-Driven Design: Models That Actually Mean Something
Architecture15 min read

Domain-Driven Design: Models That Actually Mean Something

Learn what DDD really is, when it makes sense, and how Entities, Value Objects, Aggregates, and Invariants work — with a complete feature walkthrough from domain layer to API.

Andres Tascon
Andres TasconApril 15, 2026

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