redis/redis-rb · error · TypeError

#{name} must be an Integer in integer mode, got #{value.clas

Error message

#{name} must be an Integer in integer mode, got #{value.class}

What it means

Error "#{name} must be an Integer in integer mode, got #{value.class}" thrown in redis/redis-rb.

Source

Thrown at lib/redis/commands/strings.rb:405

      end

      # Get the length of the value stored in a key.
      #
      # @param [String] key
      # @return [Integer] the length of the value stored in the key, or 0
      #   if the key does not exist
      def strlen(key)
        send_command([:strlen, key])
      end

      private

      # INCREX bounds decide whether the increment is applied at all, so a
      # Float bound in integer mode must raise rather than silently truncate
      # (`Integer(2.9)` => 2) — mirroring how `by:` selects the mode strictly.
      def increx_bound(name, value, float_mode)
        return Float(value) if float_mode
        raise TypeError, "#{name} must be an Integer in integer mode, got #{value.class}" unless value.is_a?(Integer)

        value
      end
    end
  end
end

View on GitHub (pinned to 2ba9010b91)

Solutions

1. Pass an Integer value for the named field when the command is in integer mode.
2. Use float mode (by: / BYFLOAT semantics) if the value must be a Float, or coerce with to_i.

When it happens

Trigger: Thrown at lib/redis/commands/strings.rb:405 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of redis/redis-rb@2ba9010b91 (2026-08-23). Data as JSON: /api/errors/ae7c4fb46255e923. Report an issue: GitHub.