About the episode

In this video, we dive deep into handling concurrency in Go using the powerful errgroup. You’ll learn how to manage multiple goroutines, handle errors effectively, and implement context-based cancellations across concurrent tasks. 

We’ll walk through a real-world example, building a simple web scraper to fetch multiple URLs concurrently and demonstrate how to handle errors and limit the number of simultaneous requests to prevent overload. Using Go’s errgroup package, you’ll see how easy it is to group tasks, capture errors, and control cancellations all in one place. Whether you’re developing APIs, handling database queries, or building parallel processing pipelines, this technique can improve the reliability and efficiency of your Go applications.

In this video, we’ll cover:
- The basics of the errgroup package and its benefits
- Implementing context-based error handling with errgroup.WithContext
- Limiting concurrency with SetLimit
- How to safely manage shared data with sync.Mutex
- Practical applications for errgroup in real-world Go projects

Resources:

- Source code: https://github.com/code-heim/go_61_err_group

If you want to improve your Go concurrency skills or are just curious about managing errors across goroutines, this video is for you!

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Happy coding! 🎉