| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/go-logr/logr | Package logr defines a general-purpose logging API and abstract interfaces to back that API. |
| github.com/go-logr/logr/funcr | Package funcr implements formatting of structured log messages and optionally captures the call site and timestamp. |
| log/slog | Package slog provides structured logging, in which log records include a message, a severity level, and various other attributes expressed as key-value pairs. |