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Editorial Team
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Asked: 2026-06-13T11:06:50+00:00

From node-redis documentation on github: NOTE: Your call to client.auth() should not be inside

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From node-redis documentation on github:

NOTE: Your call to client.auth() should not be inside the ready
handler. If you are doing this wrong, client will emit an error that
looks something like this Error: Ready check failed: ERR operation not
permitted

So does that mean that when client.auth executes a callback passed to it, it is safe to assume that this connection is ready for normal commands as well? If no then is one supposed to juggle two callback functions, determining which one was called second?

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1 Answer

  1. Editorial Team

    When no auth is required, node-redis sends INFO to the server to detect when it’s ready and then fires the ready event (see https://github.com/mranney/node_redis).

    When auth is required, it looks like redis will only start accepting commands once the auth is complete (see http://redis.io/commands/auth).

    So what I would do is respond to the “ready” event when not authenticating and respond to the auth callback when authenticating (probably having used {no_ready_check: true} when creating the client).

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