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What causes high TTFB?
The most common culprit for high TTFB is dynamic content generation. This refers to the time it takes PHP and database queries to generate your webpages. The primary contributing factors to slow dynamic content generation are large files, excess or slow database queries, and autoload data.
How can I reduce TTFB?
6 ways to improve TTFB:
- Use a Content Delivery Network.
- Optimize the application code.
- Optimize the database queries.
- Reduce HTTP requests.
- Ensure a faster server response time.
- Use Respond First, Process Later (RFPL) cache.
What is normal TTFB?
The issue has to be on the origin server. On average anything with a TTFB under 100 ms is fantastic. Anything between 200-500 ms is standard and anything between 500 ms and 1 s is less than ideal. Anything greater than 1 s should likely be investigated further.
What is a fast TTFB?
Time to first byte (TTFB) is the time it takes a web browser to receive the first byte in response after requesting a web page. A low TTFB suggests that a site is fast and responsive, while a high TTFB suggests that a site is slow and takes a long time to respond.
Why is my TTFB so high on my website?
The single most common reason for a high TTFB is low-quality web hosting. If your web server is poorly configured or not powerful enough to deliver a speedy response to the visitor, then your TTFB will be high.
What does it mean if your TTFB is low?
If TTFB of your site is low that means users requesting your site or site pages will have to wait for less time to receive the relevant response that ultimately results in delighting user experience. So try to manage your TTFB as low as you can to enjoy all these benefits.
How to reduce TTFB to improve WordPress page load times?
A third way, and probably one of the easiest ways to decrease your TTFB is to utilize caching on your WordPress site. Many only think that caching can help decrease your load times, but in fact, it also helps decrease TTFB as it helps reduce the server processing time.
When do I stop worrying about TTFB status?
Study 1 (By Cloudflare): Based on the Cloudflare study, TTFB is not a helpful measure and one should stop worrying about it. Ideally, when a request for a web page is received by the server, first it responds with HTTP/1.1 200 OK status that indicates the page is available.