Go: Structs vs Interfaces Performance

What are the performance differences between structs and interfaces in Go?

Structs in Go are generally more performant than interfaces because they avoid the overhead of dynamic dispatch.

Can you explain what dynamic dispatch is?

Dynamic dispatch is a method of selecting which implementation of a polymorphic operation to call at runtime, which adds overhead.

Are there scenarios where using interfaces is more beneficial?

Yes, interfaces provide flexibility and allow for easier testing and mocking, which can be beneficial in many cases.

How do I decide when to use structs or interfaces in my Go code?

Consider using structs for performance-critical paths and interfaces when you need flexibility or to adhere to design patterns.