Questions tagged [ttfb]

TTFB stands for "time to first byte", a metric that indicates the time elapsed between the time a remote computer establishes a connection to a website and the time the first byte of data is sent back to the remote computer. This is often measured in milliseconds.

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Does TTFB refers to loading a webpage totally or just until fold?

Does TTFB refers to loading a webpage totally or just until fold? By fold I mean to the fold as in "Render blocking Above-The-Fold content".
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High TTFB on NGINX for specific cached static resources

I am trying to optimize the following page: https://123tinki.com/nl-nl/c/geperste-hondenbrokken It is served by an NGINX reverse proxy. Static content like .js and .css is cached by the NGINX server. ...
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Should we improve time to first byte or Page Speed Insights score for SEO?

Google posted last summer that "page speed" will impact the search result rankings also on mobile devices. But I think there is a little confusion about the term "page speed". The test tool which ...
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3 seconds to TTFB in CloudFront

I'm trying to improve the speed of a site and I've noticed that it takes 3 seconds to download some images from CloudFront. To download a 18kb image it takes 3 seconds: And it's a Hit from ...
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OCSP Stapling still connecting to OCSP server

Goal: Decrease the Time to First Byte on a server that uses Extended SSL validation. Possible Issue: I enabled OCSP stapling and ssllabs shows OCSP stapling is enabled, but tests at webpagetest.org ...
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354 views

Performance Issues Using SSL With Cloudflare

I have been using Cloudflare for a while without much consideration to what it was doing. Today I have noticed that there is around 500ms of delay when I view a web page over https when Cloudflare is ...
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447 views

How to start troubleshooting extremely high ttfb on large queried pages?

We have a dedicated server that feeds a very large wordpress site with a lot of advanced queries - large integrated CMS/Video-enabled with a ton of extra WP fields added on. The server is 32G memory, ...
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302 views

More apache processes = higher TTFB = lower money? why?

I just upgraded my server from 8 GB ram to 16 GB ram. I then adjusted my apache settings to serve more users at a time including mobile. Yes I'm still on prefork mode because I created a module and I'...
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196 views

Is webpagetest.org unreliable with mobile testing? I'm trying to get accurate results

I use webpagetest.org to test my website very often. When I used a couple of remote desktop computers on their site, my TTFB (time to first byte) measures between 1 and 400ms. However, on nearly all ...
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Which does google prefer: chained redirects or longer time-to-first-byte?

I'm clearly a webpagetest.org addict now. Once again, I tested my site after optimizing (by eliminating some file scans) and the speed greatly improved. It's now at about 150ms Time to First Byte from ...