go-redis/redis · error

redis: can't parse %.100q

Error message

redis: can't parse %.100q

What it means

Error "redis: can't parse %.100q" thrown in go-redis/redis.

Source

Thrown at internal/proto/reader.go:366

		return util.ParseInt(line[1:], 10, 64)
	case RespFloat:
		return r.readFloat(line)
	case RespBool:
		return r.readBool(line)
	case RespBigInt:
		return r.readBigInt(line)

	case RespString:
		return r.readStringReply(line)
	case RespVerbatim:
		return r.readVerb(line)

	case RespArray, RespSet, RespPush:
		return r.readSlice(line)
	case RespMap:
		return r.readMap(line)
	}
	return nil, fmt.Errorf("redis: can't parse %.100q", line)
}

func (r *Reader) readFloat(line []byte) (float64, error) {
	v := util.BytesToString(line[1:])
	switch v {
	case "inf":
		return math.Inf(1), nil
	case "-inf":
		return math.Inf(-1), nil
	case "nan", "-nan":
		return math.NaN(), nil
	}
	return strconv.ParseFloat(v, 64)
}

func (r *Reader) readBool(line []byte) (bool, error) {
	switch util.BytesToString(line[1:]) {
	case "t":

View on GitHub (pinned to 36d97525cd)

Solutions

1. Check the truncated reply in the error to see the actual bytes
2. Verify server version compatibility for the command used

When it happens

Trigger: Thrown at internal/proto/reader.go:366 when the library encounters an invalid state.

Common situations: Gate version-specific commands with SkipBeforeRedisVersion-style checks in application code too.

AI-assisted analysis of go-redis/redis@36d97525cd (2026-08-06). Data as JSON: /data/errors/299c7a50ab2b6676.json. Report an issue: GitHub.