《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語，提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现

All Algorithms implemented in Java

Everything you need to know to get the job.

🔥LeetCode solutions in any programming language | 多种编程语言实现 LeetCode、《剑指 Offer（第 2 版）》、《程序员面试金典（第 6 版）》题解

A distributed task scheduling framework.（分布式任务调度平台XXL-JOB）

⭐⭐⭐⭐秒杀系统设计与实现.互联网工程师进阶与分析🙋🐓

Jenkins automation server

Redisson - Valkey & Redis Java client. Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue,…

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

Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.

Ip2region is an offline IP address manager framework and locator with both IPv4 and IPv6 supported, supporting billions of data segments, ten microsecond searching performance, xdb search client fo…

Graphs for Everyone

📲cim(cross IM) 适用于开发者的分布式即时通讯系统

即时通讯(IM)系统

Ant Media Server — Ultra-low latency streaming engine with WebRTC (~0.5s), SRT, RTMP, HLS, CMAF, adaptive bitrate, transcoding & scaling

Jitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.

A high-level and lightweight declarative HTTP client framework for Java. it makes sending HTTP requests in Java easier.

Apache Solr open-source search software

该项目基于HttpClient-4.4.1封装的一个工具类。提供了更为简单的GET、POST及上传下载等功能。同时支持插件式配置Http-Header（包含自定义header）、配置SSL和Proxy等。

IM-WhaleShark（鲸鲨）是基于 Netty 实现的高性能分布式 IM 系统

Design Pattern 经典设计模式源码 C/Java/Go/JavaScript/Python等不同语言实现。 FP/OOP/MVC/MVP/MVVM/DDD等设计思想研究。适合高级程序员和架构师，希望深刻洞察问题，找到合适的方案。

openCallHub 是一个开源的呼叫中心解决方案，提供全面的客服与语音交互功能，基于 Java 17 和 Spring Boot 开发，集成 FreeSWITCH、Kamailio 等通信组件

Based on netty 4 docking Opensips Exported Event, Exported MI and Freeswitch Event Socket Library, cdr, xml_curl and other interface implementation solutions