Is it possible to standardize error handling?

Yes, standardizing error handling in Go is possible and necessary to improve code readability and maintainability. This is usually achieved through the following approaches:

• Creating custom error types that implement the error interface, with additional information (e.g., error code).
• Using packages like errors with functions such as Wrap, Is, As for wrapping and checking errors.
• Defining a unified error logging format.
• In APIs — standardizing the format of returned errors (e.g., JSON with fields code, message).

Example of a custom error type:

package myerrors

type MyError struct {
    Code    int
    Message string
}

func (e *MyError) Error() string {
    return e.Message
}

// Usage
// return &MyError{Code: 404, Message: "Not Found"}

This approach simplifies error handling at different levels of the application.