Redix.command

You're seeing just the function command, go back to Redix module for more information.
Link to this function

command(conn, command, opts \\ [])

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Specs

Issues a command on the Redis server.

This function sends command to the Redis server and returns the response returned by Redis. pid must be the pid of a Redix connection. command must be a list of strings making up the Redis command and its arguments.

The return value is {:ok, response} if the request is successful and the response is not a Redis error. {:error, reason} is returned in case there's an error in the request (such as losing the connection to Redis in between the request). reason can also be a Redix.Error exception in case Redis is reachable but returns an error (such as a type error).

If the given command is an empty command ([]), an ArgumentError exception is raised.

This function accepts the same options as pipeline/3.

Examples

iex> Redix.command(conn, ["SET", "mykey", "foo"])
{:ok, "OK"}
iex> Redix.command(conn, ["GET", "mykey"])
{:ok, "foo"}

iex> Redix.command(conn, ["INCR", "mykey"])
{:error, "ERR value is not an integer or out of range"}

If Redis goes down (before a reconnection happens):

iex> {:error, error} = Redix.command(conn, ["GET", "mykey"])
iex> error.reason
:closed