I am working with node and php , for node , I have heard of redis for cache system and for php memcached
I have tested simple test for setting and getting 10000 items :
memcached was 10X (YES , 10 times) faster than redis and it is easy to say memcached is better in term of speed .
but I have heard that memcached is not scaled like redis , is it true ? I can see that when I want to connect memcache with add server function , I can user multi server , so , why people say that is not good in term of scale ?
why should I use redis instead of memcached in Node ?