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#TIL about the Server-Timing HTTP header: Server-Timing 'cpu=0.009; "CPU", mysql=0.005; "MySQL", filesystem=0.006; "Filesystem"' This will be displayed in @ChromeDevTools: calendar.perfplanet.com/wp-content/uploads/2017/12/image2-1-1024x265.png Wasteful if generally enabled, but great for debugging, maybe upon a query param. x.com/stoyanstefanov/status/939332583124484096