developer tools - How can I reduce the waiting (ttfb) time

Question

I have a query which involves getting a list of user from a table in sorted order based on at what time it was created. I got the following timing diagram from the chrome developer tools.

You can see that TTFB (time to first byte) is too high.
I am not sure whether it is because of the SQL sort. If that is the reason then how can I reduce this time?
Or is it because of the TTFB. I saw blogs which says that TTFB should be less (< 1sec). But for me it shows >1 sec. Is it because of my query or something else?
I am not sure how can I reduce this time.
I am using angular. Should I use angular to sort the table instead of SQL sort? (many posts say that shouldn't be the issue)
What I want to know is how can I reduce TTFB. Guys! I am actually new to this. It is the task given to me by my team members. I am not sure how can I reduce TTFB time. I saw many posts, but not able to understand properly. What is TTFB. Is it the time taken by the server?

Answer 1

The TTFB is not the time to first byte of the body of the response (i.e., the useful data, such as: json, xml, etc.), but rather the time to first byte of the response received from the server. This byte is the start of the response headers.

For example, if the server sends the headers before doing the hard work (like heavy SQL), you will get a very low TTFB, but it isn't "true".

In your case, TTFB represents the time you spend processing data on the server.

To reduce the TTFB, you need to do the server-side work faster.