Using the Server‑Timing Header to Measure Server Performance

The Server-Timing header allows you to pass arbitrary server metrics to the client. Its syntax supports different metric types: you can send just a metric name, assign a value, or provide a description.

You can transmit multiple metrics simultaneously so the client can see how long each part of request processing took.

Chrome DevTools already provides an interface to inspect Server-Timing header values.

If you want to understand how the server processes a request, the Server-Timing header can be useful, but you must avoid exposing sensitive information. Enable it only after proper authentication, such as via cookies or custom headers.

We have released a small hapi plugin that makes adding the Server-Timing header easy. You can find it at https://github.com/betterthingsdigital/hapi-server-timing or on npm.

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