文远知行L4云平台后端开发工程师（海外业务）

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Learn what technologies you should learn first to become a back end web developer.

Getting to Know the Language

这是专门针对小白的零基础Java教程。

Master Java – a must-have language for software development, Android apps, and more! ☕️ This beginner-friendly course takes you from basics to real coding skills.

中文，免费，零起点，完整示例，基于最新的Python 3版本。

a free interactive Python tutorial for people who want to learn Python, fast.

Master Python from scratch 🚀 No fluff—just clear, practical coding skills to kickstart your journey!

This course will give you a full introduction into all of the core concepts in python.

The easiest way to learn & practice modern JavaScript

Write bulletproof JavaScript code with unit testing!

从本章开始，我们就正式开启JavaScript的后端开发之旅。

这里的所有课程，即使不参加任何活动，也都可以在家自学，而且几乎都可以离线进行学习。

This is an intro to Node.js. No frameworks or libraries.

In this Node JS tutorial I'll introduce to what exactly Node is all about, why we'd use it and the technologies you'll need to be familiar with to get started.

The Go App Optimization Guide is a series of in-depth, technical articles for developers who want to get more performance out of their Go code without relying on guesswork or cargo cult patterns.

This course is designed for those new to web performance, a vital aspect of the user experience.

Application performance is not just a simple concern for most organizations; it’s a critical factor in their business’s success.

Performance tuning is an experimental science, but that doesn’t mean engineers should resort to guesswork and folklore to get the job done.

这是一篇 MySQL 通关一篇过硬核经验学习路线，包括数据库相关知识，SQL语句的使用，数据库约束，设计等。

your go-to resource for mastering MySQL in a fast, easy, and enjoyable way.

MySQL SQL tutorial for beginners

This beginner-friendly course teaches you SQL from scratch.

Learn about Elasticsearch with this comprehensive course designed for beginners, featuring both theoretical concepts and hands-on applications using Python (though applicable to any programming language). The course is structured in two parts: first covering essential Elasticsearch fundamentals including index management, document storage, text analysis, pipeline creation, search functionality, and advanced features like semantic search and embeddings; followed by a practical section where you'll build a real-world website using Elasticsearch as a search engine, working with the Astronomy Picture of the Day (APOD) dataset to implement features such as data cleaning pipelines, tokenization, pagination, and aggregations.

Learn how to ingest and query data in ClickHouse using the New York City taxi example dataset.

ClickHouse is an open-source column-oriented DBMS for online analytical processing that allows users to generate analytical reports using SQL queries in real-time.

The home page of a free online class in distributed systems.

In this tutorial, we’ll discuss some of the design principles and patterns that have been established over time to build highly concurrent applications.

Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.

You’ll understand how Go chooses to model concurrency, what issues arise from this model, and how you can compose primitives within this model to solve problems.

With this book, you'll explore the transformative world of Java 21's key feature: virtual threads.