# New Relic imgproxy can send its metrics to New Relic. To use this feature, do the following: 1. Register at New Relic and get a license key. 2. Set the `IMGPROXY_NEW_RELIC_KEY` environment variable to the license key. 3. _(optional)_ Set the `IMGPROXY_NEW_RELIC_APP_NAME` environment variable to be the desired application name. imgproxy will send the following info to New Relic: * CPU and memory usage * Response time * Image downloading time * Image processing time * Errors that occurred while downloading and processing an image