Collecting client-side performance metrics and latencies

A non-transitory computer-readable storage medium having computer-executable instructions stored thereon that, when executed by a computer, cause the computer to:

• receive an event report from a user computing device, the event report comprising a signature key, a timestamp, and one or more performance measures collected during rendering of content in a markup file to a display connected to the user computing device, wherein the one or more performance measures are collected by an application executing on the user computing device according to scripting language code provided in the markup file and wherein the signature key is computed from the timestamp and a secret code and embedded in the markup file before the markup file is sent to the user computing device;
• upon receiving the event report, validate the event report by verifying a value of the signature key, wherein verifying the value of the signature key comprises re-computing a second signature key from the timestamp in the event report and the secret code and verifying that the signature key in the event report matches the second signature key;
• and
• upon validating the event report, store the event report in a data storage system.

A system for collecting client-side performance measures during rendering of content at a user computing device, the system comprising:

• a web server configured to transmit a web page to a web browsing application executing on the user computing device, the web page comprising instructions that cause the web browsing application to collect performance measures during the rendering of the content;
• and
• a reporting service module executing on a server computer operably connected to the user computing device and configured to
• receive an event report from the user computing device, wherein the event report comprises a signature key, a timestamp, and the performance measures collected by the web browsing application during the rendering of the content, wherein the signature key is computed from the timestamp and a secret code and embedded in the web page before the web page is sent to the user computing device,
• upon receiving the event report, validate the event report by verifying a value of the signature key contained in the event report, wherein verifying the value of the signature key comprises re-computing a second signature key from the timestamp in the event report and the secret code and verifying that the signature key in the event report matches the second signature key, and
• upon validating the event report, store the event report in a data storage system.

A computer-implemented method for collecting client-side performance measures during rendering of content at a user computing device, the method comprising performing instructions under the control of a computer system for:

• sending a markup file to the user computing device, the markup comprising a signature key, a timestamp, and instructions that cause a client application executing on the user computing device to collect performance measures during the rendering of the content, the signature key being computed from the timestamp and a secret code before the markup file is sent to the user computing device;
• receiving an event report from the user computing device, wherein the event report comprises the signature key, the timestamp, and the performance measures collected by the client application during the rendering of the content;
• upon receiving the event report, validating the event report by re-computing a second signature key from the timestamp in the event report and the secret code and verifying that the signature key in the event report matches the second signature key;
• and
• upon validating the event report, storing the event report in a data storage system.