Hi,
I tried to set RenderResponse.EXPIRATION_CACHE TO 0
in
doView(RenderRequest, rreq, RenderResponse rres) throws PortletException
{
response.setProperty(RenderResponse.EXPIRATION_CACHE,"0")
log.info(request.getProperty(RenderResponse.EXPIRATION_CACHE))
}

It gives null value.

Regards,
Ramesa