redis-db-1:~# redis-cli config set notify-keyspace-events KEA
OK
redis-db-1:~# redis-cli --csv psubscribe '_key*_:*'
Reading messages... (press Ctrl-C to quit)
"psubscribe","_key*_:*",1
127.0.0.1:6379> HMSET widget:123 uri 1234@test.net
OK
127.0.0.1:6379> HMSET widget:223 uri 1234@test.net
OK
127.0.0.1:6379> HGET widget:223 uri
"12...@test.net"
127.0.0.1:6379> SET killme abc@test.com
OK
'_key*_:*'
'__key*__:*'