당연히 될줄 알았지만 생각보다 쉽게 된다. == 15 private void SetCaching(WebOperationContext context, DateTime lastModifiedDate, Int32 maxCacheAge){ 16 17 // set CacheControl header 18 HttpResponseHeader cacheHeader = HttpResponseHeader.CacheControl; 19 String cacheControlValue = String.Format("max-age={0}, must-revalidate", maxCacheAge); 20 context.OutgoingResponse.Headers.Add(cacheHeader, cacheControlValue); 21 ..