[ 原始碼： node-vary ]
套件：node-vary（1.1.2-1）
manage the Vary header of a HTTP response - Node.js module
This package provides a simple module to manage the fields of the Vary header in a HTTP response.
The Vary HTTP response header determines how to match future request headers to decide whether a cached response can be used rather than requesting a fresh one from the origin server. It is used by the server to indicate which headers it used when selecting a representation of a resource in a content negotiation algorithm.
Node.js is an event-based server-side JavaScript engine.