| Ch1 Course Introduction | 1-1 Course Guide | — | Skipped |
| 1-2 Installation and Environment | 001.md > GOPATH, Environment Variables | Covered |
| Ch2 Basic Syntax | 2-1 Variable Definition | 001.md > Basic Syntax, Built-in Types, Type Casting, Constants | Covered |
| 2-4 Conditional Statements | 001.md > if, switch | Covered |
| 2-5 Loops | 001.md > for | Covered |
| 2-6 Functions | 001.md > Functions, Pointers | Covered |
| Ch3 Built-in Containers | 3-1 Arrays | 001.md > Arrays | Covered |
| 3-3 Slice Operations | 001.md > Slice (reslice/append/copy/cap expansion) | Covered |
| 3-5 Map Examples | 001.md > Map + Longest Substring Without Repeating Characters Example | Covered |
| Ch4 Object-Oriented | 4-1 Structs and Methods | 002.md > Structs, Methods, TreeNode, Encapsulation, Queue | Covered |
| Ch5 Interfaces | 5-1 Concept of duck typing | 002.md > Interfaces, duck typing, Retriever Example | Covered |
| 5-2 Interface Definition and Implementation | 002.md > Interface Variables, Type Assertion/Switch | Covered |
| 5-4 Interface Composition | 002.md > Composite Interface Concept (Brief) | Covered |
| 5-5 Common System Interfaces | 002.md > Stringer/Reader/Writer | Covered |
| Ch6 Functional Programming | 6-1 Functional Programming | 002.md > Closures/Fibonacci + 006_函数式编程.md | Supplemented |
| 6-2 Functional Programming Example One | 002.md > TraverseFunc + 006_函数式编程.md | Supplemented |
| Ch7 Error Handling | 7-2 Error Handling Concepts | 002.md > error type, PathError | Covered |
| 7-3 Server Unified Error Handling | 002.md > errWrapper, Error Classification and Handling | Covered |
| 7-5 Server Unified Error Handling 2 | 002.md > userError interface, User/System Error Separation | Covered |
| Ch8 Testing | 8-1 Testing | 003.md > Table-Driven Tests | Covered |
| 8-2 Code Coverage and Performance Testing | 编程基础/0009_testing详解.md | Supplemented |
| 8-3 Performance Tuning with pprof | Go工程师体系课/020.md(pprof) | Supplemented |
| 8-4 Testing HTTP Server (Part 1) | 编程基础/0009_testing详解.md > httptest | Supplemented |
| 8-5 Testing HTTP Server (Part 2) | Same as above | Supplemented |
| 8-6 Generating Documentation and Example Code | 007_godoc与代码生成.md | Supplemented |
| 8-7 Testing Summary | 编程基础/0009_testing详解.md | Supplemented |
| Ch9 Goroutine | 9-1 (goroutine Basics) | 004.md > goroutine principles, coroutine vs thread, switching points | Covered |
| 9-2 Go Language Scheduler | 008_GMP调度器与Go设计哲学.md | Supplemented |
| Ch10 Channel | 10-2 Using Channel to Wait for Task Completion | 004.md > done channel, WaitGroup | Covered |
| 10-3 Tree Traversal Using Channel | 004.md > TraverseWithChannel | Covered |
| 10-4 Scheduling with select | 004.md > select, Timeout, Ticker, Data Cache Queue | Covered |
| Ch11 HTTP Standard Library | 11-1 HTTP Standard Library | 005.md > HTTP Client, User-Agent | Covered |
| Ch12 Maze Algorithm | 12-1 Maze Algorithm | 005.md > Breadth-First Search Algorithm, point struct | Covered |
| Ch13 Crawler Project | 13-1 Crawler Project Introduction | 005.md > Technology Stack Selection, Crawler Library | Covered |
| 13-2 Overall Algorithm | 005.md > Fetcher→Parser Architecture | Covered |
| Ch14 Single-Task Crawler | 14-1 Obtaining Initial Page Content | 005.md > http.Get+Transcoding+Regex | Covered |
| 14-2 Regular Expressions | 005.md > regexp.MustCompile | Covered |
| 14-3 Extracting Cities and URLs | 005.md > printCityList | Covered |
| 14-4 Architecture of the Single-Task Crawler Version | 005.md > engine/fetcher/model | Covered |
| 14-5 Engine and Parser | 005.md | Covered |
| 14-6 Testing CityListParser | 005.md | Covered |
| 14-8 User Information Parser (Part 2) | 005.md | Covered |
| Ch15 Concurrent Crawler | 15-1 Concurrent Crawler Architecture | 005.md > Worker Architecture Diagram | Covered |
| 15-2 Simple Scheduler | 005.md > Scheduler Implementation 1 (Shared Input) | Covered |
| 15-3 Concurrent Scheduler | 005.md > Implementation 2 (request+worker dual queues) | Covered |
| 15-5 Refactoring and Summary | 005.md > URL Deduplication | Covered |
| 15-6 More Cities | 005.md | Covered |
| Ch16 Docker+ES | 16-1 ItemSaver Architecture | 005.md > ItemSaver, goroutine submission | Covered |
| 16-2 Introduction to Docker and ElasticSearch | 005.md > docker run ES | Covered |
| 16-4 ElasticSearch Introduction | 005.md > REST Interface, index/type/id | Covered |
| 16-5 Storing Data to ES | 005.md > olivere/elastic client | Covered |
| 16-8 Refactoring and Running | 005.md | Covered |
| 16-9 Standard Template Library Introduction | 005.md > html/template (Brief) | Covered |
| 16-10 Implementing Frontend Display Page | 005.md | Covered |
| 16-11 Improving Frontend Display | 005.md | Covered |
| Ch17 Distributed Crawler | 17-1 Introduction to Distributed Systems | 005.md > Distributed vs Microservices, Message Passing | Covered |
| 17-4 ItemSaver Service | 005.md > jsonRPC server/client | Covered |
| 17-5 Integrating ItemSaver Service | 005.md | Covered |
| 17-7 Implementing Crawler Service | 005.md | Covered |
| 17-8 Running the Complete Distributed Crawler | 005.md | Covered |
| 17-10 Practical Project Summary | 005.md > Distributed Architecture Summary | Covered |
| Ch18 Course Summary | 18-1 Understanding Go Language Design | 008_GMP调度器与Go设计哲学.md | Supplemented |
| 18-2 Course Summary | Same as above | Supplemented |