It was news to me the other day while watching my favorite tv channel (Google Developers on YouTube) that I ran into this presentation about web performance. Previously I had no idea that modern browsers could measure metrics like "dns lookup", "server connection time", "server response time". With the awesome work from the W3C Performance Working Group, now this is a reality.
Added to the new and latests trends in continuous build cycle and automated testing, now there is the fact that you can get your RUM (Real User Metrics) as part of Google Analytics. There is always the need to do your performance testing but you can also see how the site evolves and how you could even monitor in real time what is going on. So I went I checked the Google Analytics and indeed, they are providing with all this data.
I remember a long while ago when a client had some problems with performance and we were working in the dark until we found out it was the dns lookup time! Imagine how much easy it would have been had we used this data.
For the curious I am posting the image of the lifecycle for a request. All this data could be obtained from the "Developers tool" from most modern browsers. Safari is still lagging.
Added to the new and latests trends in continuous build cycle and automated testing, now there is the fact that you can get your RUM (Real User Metrics) as part of Google Analytics. There is always the need to do your performance testing but you can also see how the site evolves and how you could even monitor in real time what is going on. So I went I checked the Google Analytics and indeed, they are providing with all this data.
I remember a long while ago when a client had some problems with performance and we were working in the dark until we found out it was the dns lookup time! Imagine how much easy it would have been had we used this data.
For the curious I am posting the image of the lifecycle for a request. All this data could be obtained from the "Developers tool" from most modern browsers. Safari is still lagging.
