How to debug the error “OOM command not allowed when used memory > 'maxmemory'” in Redis?

Question

I\'m getting \"OOM command not allowed\" when trying to set a key, maxmemory is set to 500M with maxmemory-policy \"volatile-lru\", I\'m setting T

Answer 1

In our case, maxmemory was set to a high amount, then someone on the team changed it to a lower amount after data had already been stored.