redis-cli "Error: Server closed the connection" when requesting lots of keys

Question

for some reason running command KEYS command on result with millions of keys result in Error: Server closed the connection.

[nir]$ echo "keys abc" | redis-cli -h $redis
1) "abc"
[nir]$ echo "keys a*"| redis-cli -h $redis
Error: Server closed the connection

I guess there is some timeout limit or something, how can I adjust it?

Answer 1

solution was to move from KEYS to redis-cli --scan --pattern <pattern>