Hello 👋🏻 My name is Dan Vega, Java Champion, Spring Developer Advocate, Husband and #GirlDad based outside of Cleveland OH. I created this website as a place to document my journey as I learn new things and share them with you. I have a real passion for teaching and I hope that one of blog posts, videos or courses helps you solve a problem or learn something new.
If you have an unlimited budget to spend on AI, you probably don't need to read this. If you don't like saving money, feel free to skip this one. But if you're like me and want to reduce your AI application costs, prompt caching is a technique you need to...
OpenAI released Codex, a new GUI for their coding agent. I put it to the test by building a vending machine CLI application in Java 25 with Maven, JUnit 6, and JSpecify null safety annotations.
Learn how to use the new spring-boot-starter-opentelemetry in Spring Boot 4 to add observability with traces, metrics, and logs—no Actuator required.
