Design patterns implemented in Java

Everything you need to know to get the job.

All Algorithms implemented in Java

Mirror of Apache Kafka

A collection of algorithms and data structures

A high performance caching library for Java

QuestDB is a high performance, open-source, time-series database

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

A collection of source code generators for Java.

Open-Source Web UI for Apache Kafka Management

Learn Low Level Design (LLD) and prepare for interviews using free resources.

Kafka Web UI

The simple, stupid rules engine for Java

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

Apache Kafka® running on Kubernetes

Brings the popular ruby faker gem to Java

Apache Calcite

Algorithms and Data Structures implemented in Java

Apache Maven core

An Engine-Agnostic Deep Learning Framework in Java

Fault tolerance and resilience patterns for the JVM

The source code from the third edition of Effective Java, with minor additions as necessary to make it runnable.

The Data Transfer Project makes it easy for platforms to build interoperable user data portability features. We are establishing a common framework, including data models and protocols, to enable d…

Micro second messaging that stores everything to disk

Leetcode solutions

LibRec: A Leading Java Library for Recommender Systems, see

A easy and high-performance monitoring system, for comprehensive monitoring and management of kafka cluster.

Java Docker API Client