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Master programming by recreating your favorite technologies from scratch.
Interactive roadmaps, guides and other educational content to help developers grow in their careers.
Curated list of project-based tutorials
Master the command line, in one page
💯 Curated coding interview preparation materials for busy software engineers
Papers from the computer science community to read and discuss.
A collection of (mostly) technical things every software developer should know about
Design patterns implemented in Java
Distributed reliable key-value store for the most critical data of a distributed system
A curated list of awesome frameworks, libraries and software for the Java programming language.
A curated list of software and architecture related design patterns.
ClickHouse® is a real-time analytics database management system
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
This is a repo with links to everything you'd ever want to learn about data engineering
Netty project - an event-driven asynchronous network application framework
A distributed task scheduling framework.（分布式任务调度平台XXL-JOB）
Learn System Design concepts and prepare for interviews using free resources.
👨🎓 Java Core Sprout : basic, concurrent, algorithm
🔥 Seata is an easy-to-use, high-performance, open source distributed transaction solution.
Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality.
HTTP load testing tool and library. It's over 9000!
Orchestrate everything - from scripts to data, infra, AI, and business - as code, with UI and AI Copilot. Simple. Fast. Scalable.
AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents
Newsletter to help busy software engineers become good at system design 👇