I'm setting up a system that consists of:
2-4 database servers
2-4 webservers (running Node.js)
The webservers use the database servers heavily.
Aside from connecting to the private IPs of the database servers and using the same Availability Zone, how else can I increase the speed internally between these servers?
NOTE: This system might need to scale to 10X the size. I've used VPC before on a similar setup, but I'm not sure if that makes a difference in terms of internal speed.