Java servlet如何禁用页面缓存

Question

How to disable caching ?

What headers should doGet set?

Could you provide a code snippet?

Answer 1

This will set caching to disabled on the response:

// Set standard HTTP/1.1 no-cache headers.
response.setHeader("Cache-Control", "private, no-store, no-cache, must-revalidate");

// Set standard HTTP/1.0 no-cache header.
response.setHeader("Pragma", "no-cache");

Answer 2

I want to disabled the varnish cache if backend server return some header

eg.

if is set header like follow

JAVA code

ServletActionContext.getResponse().addHeader("ABC","true")

then in varnish if I found value of header ABC as true then I don't want to cache this page.