by Devin Yang
(This article was automatically translated.)

Published - 7 years ago ( Updated - 7 years ago )

About TTFB:

TTFB(Time To First Byte): The browser is waiting for the first byte of the response. TTFB stands for time to first byte.
This time includes 1 round trip delay and the time for the server to prepare a response.

Key points:

Okay, maybe everyone will wonder that the TTFB time of your host is very long, which means that the host may perform some calculations before the screen can be displayed.
For example, a large number of database queries, or the network is too slow, and other factors, but how to judge?
We can compare whether the HTML static page is very different from the simple PHP dynamic page, and perhaps find out the problem of slow TTFB response.
For example, if the TTFB is 16ms on a static page but when it comes to a dynamic page in PHP, it runs 3xxms without any calculation.
Such a problem may be in the setting of PHP.

You can see if any plug-in is affected, such as Xdebug plug-in with PHP enabled,
At this time, the TTFB will not be 13.36ms below, but may become 2xxms.

So if it is the Porduction version, and Xdeubg is used in php.ini, remember to disable the Xdebug function.

Tags:

Devin Yang

Feel free to ask me, if you don't get it.:)

No Comment

Post your comment

Login is required to leave comments

Similar Stories


web-hosting

Bluehost's host is really slow enough, so it can only be optimized crazily

In other words, Bluehost's webhosting is really too slow. Is it because of the geographical location? However, with unlimited traffic and space, it is almost impossible to ask for anything. After my crazy optimization, using PageSpeed ​​Insights test, finally the computer version finally reached 85 points.

router,nat

My Juyi Firewall NAT Notes

In this article, I found the relevant instructions about Juyi's NAT and DMZ. I used Google to translate it into Chinese and then adjusted it a little. Juyi's NAT includes "port redirection", "open port" and "DMZ host". (There are Port Redirection, Open Ports, and DMZ Host.)

pip3 install face_recognition

Running Facial Recognition Software on Raspberry Pi 3