Hi, I wanted to get your feedback on the breakdown between frontend (WAN) vs. backend (server response with database) latency. I have heard 80% frontend and 20% backend latency split ~2.4 seconds frontend and 600 ms second backend (not optimzed, no CDN) Appreciate your feedback, Roland

Two reactions - There will be enormous variation in WAN latency, depending on tech (fixed/mobile/satellite) and distance between server and user Regulators (FCC, Ofcom, ARCEP, CRTC) publish stats on network latency, which may be helpful Rob

Yes, there is a lot of information on WAN latency. And it does vary based on network conditions. However, I was more interested in the network latency range between the application and database. Any help here would be appreciated. Roland

Are you asking about server response times and client side rendering or about server side data? The former is available in the HTTP Archive stats. The latter has significant variance between architecture and is impossible aggregate usefully. If you’re looking for server side stats you’ll need to…

I mean server response times plus separate network information (including WAN). In other words, is there any way to verify an 80/20 split, or is this hand-waving? The related question is how practical is it to recover the route for a particular response through various networks, with the ability…

In the HTTP Archive data it should be easy enough to calculate for the conditions which it tests. The “back-end time” is the “Time to First Byte” (being generous as it will include DNS and socket connect as well) and the full time is the page load time. Time to first byte / page load time = % of t…

End-to-End Web Page Latency Breakdown

Analysis

pindiespace February 15, 2017, 12:44pm 5

Is it possible to recover this information for individual requests? Would
be useful in computing a ‘carbon footprint’ for a user session or
particular server setup.

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End-to-End Web Page Latency Breakdown

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