How to create a single redis connection

[first-mine]

I have tried creating a connection with pool_size = 1 and backlog=10 but every concurrent request creating new connection.

For 5 concurrent request this is the output.
netstat | grep redis
tcp 0 0 app-server:15174 app-redis-:6375 ESTABLISHED
tcp 0 0 app-server:14600 app-redis-:6375 ESTABLISHED
tcp 1 0 app-server:2666 app-redis-:6375 CLOSE_WAIT
tcp 0 0 app-server:15156 app-redis-:6375 ESTABLISHED
tcp 0 0 app-server:15158 app-redis-:6375 ESTABLISHED
tcp 0 0 app-server:15170app-redis-:6375 ESTABLISHED

Ideally it should have created 1 connection and queued the rest 4. Right ? Is this a issue from my side?

[zhuizhuhaomeng]

did you call the set_keepalive to put the connection to the pool?

[first-mine]

Yes, set_keepalive is there after connect.
local ok, err = red:set_keepalive(1000000, 100)

[first-mine]

Even if set_keepalive wasn't there. It shouldn't have created 5 connection. Right ?

[zhuizhuhaomeng]

Please show your code that can reproduce the problem

[first-mine]

@zhuizhuhaomeng
One more observation I found.
For red:publish command, new connection is opening every time,
I have called the set_keepalive.
But for other operations like get, set, lpush, etc the same connection getting reused.
Is this a bug or is it supposed to be like this ??