just a few redis LUA examples stolen from various places
https://www.compose.com/articles/a-quick-guide-to-redis-lua-scripting/
https://redis.com/ebook/part-3-next-steps/chapter-11-scripting-redis-with-lua/
https://www.freecodecamp.org/news/a-quick-guide-to-redis-lua-scripting/
https://github.com/alexanderscott/redis-lua-samples
https://www.redisgreen.com/blog/intro-to-lua-for-redis-programmers