Open source application performance monitoring tool with emphasis on ease of setup and use. Providing similar functionality like NewRelic/AppNeta/Skylight etc.
pepper metrics is a tool, it can helps you collect runtime performance use RED method, and then output as log / timeseries data, by default it use prometheus as datasource, grafana as UI
Measures time-to-first-byte in seconds, for single or multiple URLs. Can calculate fastest, slowest & median TTFB values, and optionally log all response headers. Uses curl and the calculation `%{time_starttransfer} - %{time_appconnect}` which doesn't include any connection overhead, to better approximate devtool’s TTFB figure.
Bidirectional JavaScript <-> ESI converter. Write javascript code that will be converted to valid ESI (Edge Side Includes), capable of running at the Edge.