... target¹

In the following discussion, the term target is used to refer to a Web document, specified by a URL and any applicable arguments to the HTTP GET command.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... node²

Although we present LARD differently than in Pai et al. [23], it can be proven that the strategies are equivalent when $L_{idle} \equiv T_{low}$ and $Miss\ Cost \equiv T_{high}-T_{low}$ .

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... idle³

An idle connection can be detected at the front-end by the absence of ACKs from the client.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.