Apache Druid: a high performance real-time analytics database.

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

📈 Capturing JVM- and application-level metrics. So you know what's going on.

configuration library for JVM languages using HOCON files

Automated mass refactoring of source code.

An open source clone of Amazon's Dynamo.

Distributed object store

Kroxylicious, the snappy open source proxy for Apache Kafka®

Apache Kafka is an open-source distributed event streaming platform used by thousands of companies. uForwarder aims to address several pain points while using Apache Kafka for pub-sub message queue…

Data Pipeline Automation Framework to build MCP servers, data APIs, and data lakes with SQL.

Compare eventual consistency of object stores

Multi-hop declarative data pipelines

Gradle plugin that generates Java bindings from native library headers using Jextract

Web page content extractor

Java client for the Philips Hue Entertainment API

A handy tool that converts Avro and Protobuf data to and from Java POJOs