Justice

Building things… and learning along the way

Skills

Java Spring Boot AWS Kafka Elasticsearch OpenRewrite Postgres RabbitMQ Kinesis Claude Code React

I’m a backend engineer working mostly in Java and Spring Boot, with AWS, Kafka, RabbitMQ and Kinesis on the event-driven side and Elasticsearch and Postgres for storage and search. This is where I write up what I actually run into — JVM internals, migrations with OpenRewrite, production concurrency bugs, and lately Claude Code as part of the day-to-day toolchain — mostly for future-me, and anyone who finds the same problem via search.

Latest posts

LSP in Claude Code: Setting It Up for Java, Python, and Next.js

9 October 2026·3 mins

Claude-Code Developer-Tools

Without a language server, Claude finds code the way grep does. With one, it gets real diagnostics after every edit and navigates by symbol instead of by text match.

Compact Object Headers by Default: JEP 534 in Java 27

28 September 2026·4 mins

Java Jvm Performance

Every object on the heap has paid a 96-bit tax since forever. Java 27 shrinks it to 64 bits and turns that on for everyone, not just people who opted in.

JFR In-Process Data Redaction: JEP 536 in Java 27

25 September 2026·4 mins

Java Jfr Security

Java 27 teaches JFR to redact secrets from recordings before they ever hit disk, instead of trusting whoever opens the dump later not to leak them.

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