I'm diving into Go for a personal project and looking for advice on best practices! It's a real backend service with a CLI tool communicating over HTTP, and while I've got the basic Go syntax down, I want to avoid merely translating my Python and JavaScript knowledge into Go. I'm particularly interested in a few key areas:
1. **Project Structure**: What's the best way to organize small to medium Go projects in terms of package management, public vs. internal APIs, and Go modules? I want a layout that can scale later but keeps things manageable.
2. **Error Handling and Context**: What are the effective patterns for managing errors, when to wrap them, and how to appropriately use the context package instead of just passing it around arbitrarily?
3. **Concurrency**: I get goroutines and channels at a basic level, but I don't want to use concurrency everywhere just because it's an option. In small services, when is it better to use simple goroutines, when is a worker pool ideal, and when should I just go without concurrency?
4. **Interfaces**: I've heard that Go interfaces should be small and defined based on what the consumer needs. When is it actually beneficial to implement an interface, and when does it just complicate things due to OOP habits?
I'm already using tools like go fmt, go test, and go vet and checking out the standard library docs, but I'd love insights from those who have experience with production Go; what patterns have worked well and what do you wish you hadn't done? How would you start out to ensure your project is idiomatic and maintainable?
1 Answer
One thing I’ve found with Go is that error handling can make your code a bit lengthy, especially with all the `if err != nil` checks. It can feel cumbersome at first, but it really forces you to handle failures explicitly, which is a good practice. Just be ready for that noise!
Haha, exactly! It does take some getting used to, but I think that explicitness pays off in the long run. It keeps things from slipping through the cracks.