Stars
「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试，首选 JavaGuide！
《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新，English version ongoing
Design patterns implemented in Java
😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识
Demonstrate all the questions on LeetCode in the form of animation.（用动画的形式呈现解LeetCode题目的思路）
Free and Open Source, Distributed, RESTful Search Engine
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas
Netty project - an event-driven asynchronous network application framework
about learning Spring Boot via examples. Spring Boot 教程、技术栈示例代码，快速简单上手教程。
an easy-to-use dynamic service discovery, configuration and service management platform for building cloud native applications.
APM, Application Performance Monitoring System
A powerful flow control component enabling reliability, resilience and monitoring for microservices. (面向云原生微服务的高可用流控防护组件)
GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
光 HikariCP・A solid, high-performance, JDBC connection pool at last.
Distributed SQL transaction & query engine for data sharding, scaling, encryption, and more - on any database.
CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。
A collection of algorithms and data structures
🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.
Apache Pulsar - distributed pub-sub messaging system