Feature: Connection pools

[tmikaeld]

Since Redis itself is a serial protocol, we're limited to 1 command at a time, having a connection pool would solve this issue and drastically improve performance (Especially on multi-threaded redis like KeyDB).

I suggest a number by default to open multiple connections to the same port and an array of connections for custom hosts and ports (ex. for clusters).

[iuioiua]

By default, I'd rather keep things as simple as possible. I'd be surprised if the current approach would ever be the source of a performance bottleneck and should be more than sufficient, in terms of performance, for most use cases. Either way, I'd happily look at a PR exploring this functionality.