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We have a simple setup that consists of...

1 EC Instance for HTTP/PHP requests
1 RDS Instance for our Database requests

Currently our two servers do not use VPC to communicate.

I was wondering if there would be performance advantages to setting the two servers up on a VPC. Would a VPC lower the response time when the servers communicate?

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No, VPC would not be any faster because it is almost definitely implemented as an overlay network (i.e. tunnelled packets which are transported on the same network as non-VPC connectivity is). In fact, VPC would be slightly slower because of the additional cost of encapsulation, decapsulation, and routing.

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  • Then is there ever a point to putting both inside a VPC? – wrongusername Aug 10 '14 at 4:02

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