Client libraries can handle this automatically: you can send the EVALSHA command...

simonw on April 27, 2018 | parent | context | favorite | on: Scaling a High-Traffic Rate Limiting Stack with Re...

Client libraries can handle this automatically: you can send the EVALSHA command and it will either execute successfully or reply with "I don't know what that script is" - then the client can re-send with the full script.