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Design patterns implemented in Java

Free and Open Source, Distributed, RESTful Search Engine

Everything you need to know to get the job.

All Algorithms implemented in Java

Open Source Identity and Access Management For Modern Applications and Services

⚡ Workflow Automation Platform. Orchestrate & Schedule code in any language, run anywhere, 600+ plugins. Alternative to Airflow, n8n, Rundeck, VMware vRA, Zapier ...

High Performance Inter-Thread Messaging Library

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

The Metadata Platform for your Data and AI Stack

The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on 12/31/2025). The AWS SDK for Java 2.x is available here: https://github.com/aws/aws-sdk-java-v2/

Ultra-fast matching engine written in Java based on LMAX Disruptor, Eclipse Collections, Real Logic Agrona, OpenHFT, LZ4 Java, and Adaptive Radix Trees.

The best Java open source crypto currency exchange platform, bitcoin exchange based on Java | BTC exchange | ETH exchange | digital currency exchange | trading platform | matching trading engine. T…

体积小,接入简单,API全面的K线,An Easy-to-Use and Perfect K-Line Library ,CandleStick,Kchart,CandleLine,Kline(虚拟币,股票,基金,外汇),指标线(MACD,WR,KDJ,RSI,EMA),ChartView,可以配置出任何交易所的K线样式

an open source cryptocurrency exchange

Ultra-fast matching engine written in Java based on LMAX Disruptor, Eclipse Collections, Real Logic Agrona, OpenHFT, LZ4 Java, and Adaptive Radix Trees.

My java template - maven

I am new to mongo db