I would like to know what type of server you are operating with. Also, I wonder if it's just about creating the code or do I have to configure the virtual machine?
If you want to achieve extremely fast connections, mongoDB is not the problem, but the socket is. I insist on knowing the server configuration. (It has a core dedicated to 100 query threads). Also, in what format they come, since if it is in json, I have an extremely fast library. I hope we can have more jobs in the future. I guarantee the quality in my codes.