go-redis/redis · error

cannot scan redis.result %s into struct field %s.%s of type

Error message

cannot scan redis.result %s into struct field %s.%s of type %s, error-%s

What it means

Error "cannot scan redis.result %s into struct field %s.%s of type %s, error-%s" thrown in go-redis/redis.

Source

Thrown at internal/hscan/structmap.go:123

	if isPtr && v.Type().NumMethod() > 0 && v.CanInterface() {
		switch scan := v.Interface().(type) {
		case Scanner:
			return scan.ScanRedis(value)
		case encoding.TextUnmarshaler:
			return scan.UnmarshalText(util.StringToBytes(value))
		case encoding.BinaryUnmarshaler:
			return scan.UnmarshalBinary(util.StringToBytes(value))
		}
	}

	if isPtr {
		v = v.Elem()
	}

	if err := field.fn(v, value); err != nil {
		t := s.value.Type()
		return fmt.Errorf("cannot scan redis.result %s into struct field %s.%s of type %s, error-%s",
			value, t.Name(), t.Field(field.index).Name, t.Field(field.index).Type, err.Error())
	}
	return nil
}

View on GitHub (pinned to 36d97525cd)

Solutions

1. Ensure the struct field type matches the Redis value representation (e.g. string field for string values)
2. Add a redis tag or BinaryUnmarshaler to control conversion for mismatched fields

When it happens

Trigger: Thrown at internal/hscan/structmap.go:123 when the library encounters an invalid state.

Common situations: Mirror the hash schema in the Go struct exactly and test scanning with representative data.

AI-assisted analysis of go-redis/redis@36d97525cd (2026-08-06). Data as JSON: /data/errors/ba333d02fd605931.json. Report an issue: GitHub.