public void onRevalidated(boolean isNotModified, CacheEntry ce) {
if (isNotModified) {
try {
countCacheHit++;
IHttpResponse resp = ce.newResponse();
resp.setHeader(XHEADER_NAME, "HIT - revalidated (xLightweb)");
exchange.send(resp);
} catch (IOException ioe) {
exchange.sendError(ioe);
}