     
     func decorateResponse(version: UInt64, date: Date, response: BRHTTPResponse) -> BRHTTPResponse {
         let headers = [
+            "Cache-Control": ["max-age=0, must-revalidate"],
             "ETag": ["\(version)"],
             "Last-Modified": [date.RFC1123String() ?? ""]
         ]

            }
            let headers: [String: [String]] = [
                "ETag": ["\(ver)"],
                "Last-Modified": [date.RFC1123String() ?? ""],
                "Content-Type": ["application/json"]
            ]

            }
            let headers: [String: [String]] = [
                "ETag": ["\(ver)"],
                "Cache-Control": ["max-age=0, must-revalidate"],
                "Last-Modified": [date.RFC1123String() ?? ""]
            ]
            return BRHTTPResponse(
