I do want to point out that a single gateway can perform considerable well.
Like is it possible to use docker swarm to scale it?
Based on the mentioned repro, it doesn’t seem possible without a license. I also don’t think we support docker swarm since the repo was last updated 2 years ago.
However, may I know is it possible to scale this gateway?
It is possible with load balancers, a good architecture and some effort. You do have to ensure your APIs are updated across all the gateways.
You could check out other possible options Tyk OSS in Kubernetes with more ReplicaCount - #2 by Pete