code: public static void disableCaching(final WebResponse response)
  	{
  		response.setLastModifiedTime(Time.now());
  		final HttpServletResponse httpServletResponse = getHttpServletResponse(response);
  		if (httpServletResponse != null)
  		{
  			httpServletResponse.addHeader("Cache-Control", "max-age=0");
  			httpServletResponse.setDateHeader("Expires", 0);
  		}
  	}
docs: Disables caching from a WebPage. To disable the cache override the WebPage.setHeader() and
  invoke this method. For instance:<code>
  protected void setHeaders(WebResponse response) {
  &nbsp;&nbsp;&nbsp;&nbsp;
  WicketComponentExtensions.disableCaching(response);
  }
  </code>
  
  @param response
  the response