Redis ERR unknown command

The specified Redis command is unknown or invalid.
  1. Verify the command syntax: Ensure that the command you're attempting to execute is correctly spelled and adheres to Redis syntax. Redis commands are case-sensitive.
  2. Check Redis version: Some commands may not be available in your version of Redis. Use redis-cli INFO server to check your Redis version and compare it with the Redis commands documentation to ensure the command is supported.
  3. Review Redis command renaming or disabling: In some cases, commands might be renamed or disabled for security reasons. Check the Redis configuration file (redis.conf) for any rename-command directives that might have renamed the command you're trying to use.
  4. Use COMMAND to list all available commands: Run redis-cli COMMAND to get a list of all commands supported by your Redis server. Search through the list to see if the command exists. If the command is not listed, it might be due to the reasons mentioned above.
  5. Check for custom Lua scripts: If you're trying to run a Lua script with EVAL or similar and receive an unknown command error, ensure the script syntax is correct and the commands used within the script are valid Redis commands.
  6. Consult the Redis logs: Look into the Redis server logs for any errors or warnings that might give you more context about the problem.

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Most-used commands
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