1. A method comprising: (a) identifying, by a device configured to accelerate network traffic between a plurality of clients and one or more servers, a flow identifier to which to collect metrics, the flow identifier comprising an application identifier; (b) identifying, by the device while accelerating network traffic, a stream of network packets corresponding to the flow identifier from network traffic traversing the device and; and (c) collecting, by the device while accelerating network traffic, metrics on the identified stream of network packets.