If there's a way to check if a key already exists in a redis list?
Your options are as follows :
* Using LREM and replacing it if it was found.
* Maintaining a separate SET in conjunction with your LIST
* Looping through the LIST until you find the item or reach the end.
Redis lists are implemented as a, hence the limitations. I think your best option is maintaining a duplicate SET. Regardless, make sure your actions are atomic with MULTI-EXEC or Lua scripts.
