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.

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: /api/errors/299c7a50ab2b6676. Report an issue: GitHub.

Appendix: 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":

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