redis/go-redis · error

failed to resolve credentials: %w

Error message

failed to resolve credentials: %w

What it means

Error "failed to resolve credentials: %w" thrown in redis/go-redis.

Source

Thrown at redis.go:890

		// the pre-fix wrappedOnClose approach — build an unbounded closure chain
		// retaining every prior connection's unsubscribe (see issue #3772).
		//
		// Note: pool.Conn.SetOnClose OVERWRITES any prior callback (see the
		// doc on that method). That is safe here because the streaming
		// credentials Manager deduplicates listeners by connection id, so a
		// second initConn on the same cn re-Subscribes the SAME listener and
		// the returned unsubscribe is equivalent to the one already installed.
		// Any future code path that could hand out a distinct unsubscribe on
		// re-initialization must first invoke the existing one to avoid
		// orphaning the old subscription on the credentials provider.
		cn.SetOnClose(unsubscribeFromCredentialsProvider)

		username, password = credentials.BasicAuth()
	} else {
		username, password, initErr = c.opt.resolveCredentials(ctx)
		if initErr != nil {
			cn.GetStateMachine().Transition(pool.StateClosed)
			return fmt.Errorf("failed to resolve credentials: %w", initErr)
		}
	}

	// for redis-server versions that do not support the HELLO command,
	// RESP2 will continue to be used.
	// helloOK tracks whether HELLO succeeded. If it did not, the connection
	// falls back to RESP2 regardless of c.opt.Protocol, and features that
	// require RESP3 (e.g. maintenance notifications) must be skipped.
	helloOK := false
	// For redis-server versions that do not support HELLO, RESP2 continues to
	// be used. Remember that negotiated fallback: configured Protocol remains 3,
	// but CSC must not serve without RESP3 invalidations.
	helloFallbackToRESP2 := false
	if initErr = conn.Hello(ctx, c.opt.Protocol, username, password, c.opt.ClientName).Err(); initErr == nil {
		// Authentication successful with HELLO command
		helloOK = true
	} else if !isRedisError(initErr) {
		// When the server responds with the RESP protocol and the result is not a normal

View on GitHub (pinned to c5cad058c7)

When it happens

Trigger: Thrown at redis.go:890 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of redis/go-redis@c5cad058c7 (2026-09-01). Data as JSON: /api/errors/608f41ebf056bcca. Report an issue: GitHub.