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How to improve TTFB ?
The lighthouse report indicates 100 for performance, accessibility, best practices and SEO for my site but 0.12s, in red, for the TTFB.
1°) What would be a good TTFB ?
2°) TTFB depends a lot of the location of the hosting and in my case the hosting is in Europe and when I try my site in https://www.webpagetest.org/, I see big differences. How can I reduce these differences ?
pwa koolsol ( international solitaire game )
Our audit is looking for anything less than 600 ms, but a good TTFB is in the <200ms range, ideally <100ms.
If you're asking how you can reduce differences for your users, the answer would be CDNs/edge servers closer to your users :)
If you're asking how you can run tests closer to your infrastructure, it's something the PSI team is aware of and thinking about.
Also worth noting that the TTFB audit won't impact your performance score specifically. It's just pointing out one of the major components of your metric that could be improved. If you're managing to get green scores without following its advice, great!