Design patterns implemented in Java

#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

All Algorithms implemented in Java

Everything you need to know to get the job.

Google core libraries for Java

The java implementation of Apache Dubbo. An RPC and microservice framework.

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

Open Source Identity and Access Management For Modern Applications and Services

Conductor is an event driven agentic workflow engine providing durable and highly resilient execution engine for applications and AI Agents

PDF Parser for AI-ready data. Automate PDF accessibility. Open-source.

Apache Flink

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

A high performance caching library for Java

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

The official home of the Presto distributed SQL query engine for big data

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance …

Diskless Kafka® on S3. 10x Cost-Effective. No Cross-AZ Traffic Cost. Autoscale in seconds. Single-digit ms latency. Multi-AZ Availability.

Feign makes writing java http clients easier

A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

Java JsonPath implementation

Apache Iceberg

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

Apache NiFi

JanusGraph: an open-source, distributed graph database

Native Operating System and Hardware Information

Yahoo! Cloud Serving Benchmark

Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, R…