Struct tags are metadata strings attached to Go struct fields to control how external tools process the data.
Struct tags are key-value pairs attached to struct fields that provide metadata for external tools like JSON encoders or database mappers. They are defined as backtick-quoted strings immediately following a field declaration.
type User struct {
Name string `json:"name"`
Age int `json:"age"`
}
Struct tags are like sticky notes attached to specific parts of your data structure. They tell other programs how to handle that data, such as what name to use when saving it to a file or database. Without them, tools would just use the raw code names, which might not match your external requirements.