gmakhs Im also using litespeed plugin, and agree with you it gives good performance and stability with redis but im in search for best possible config to optimize redis to give better performance for heavy e-commerce sites..
im currently testing following config
timeout 90
tcp-keepalive 60
maxmemory 250mb
maxmemory-policy allkeys-lru
maxmemory-samples 10
hz 50
maxclients 1000
tcp-backlog 4096
tweaking timeouts and keepalive between range of 60 to 120, also allotting more RAM like upto 1gb max for heavy sites..