My one of the site is running too slow, like taking 100s+ :

I have applied below solution :

– Install cache plugin
– Manually minified js files.
– Optimize images
– Minify css/js (as possible as many)
– Improve static query string
– Enalble keep alive (not working in htaccess)
– Set cache/boost up site performance plugin
– Set compression/expire/cache control code in htaccess
– Download font in our server, instead of google font url.
– Combine css/js
But still not archive good speed.

As I have notice it take much time in TTFB (time to first byte)
— So I have google for the same, and found that, there may be DB not config proper etc,but it look fine for me.

But I could not solve it.

Even I have notice that there was some ‘wp-include’ & ‘wp-admin’ ‘s file was include, I can see from browser (network tab)

So is there any other solution, which may use full to improve site performance?

So is there any other solution, which may use full to improve site performance?

What does tools such as https://tools.pingdom.com/ or https://gtmetrix.com/ tell you about your site?

Can you please guid me how to moved this topic at exact where it should?

And yes I have follow both the tool & accordingly make many changes, in pingdom,gtmetrix, I just get now, 10 to 15 sec.
But even its too much, I need minimum, 4 to 6 sec

Need to also look at:
– what sort of traffic is your site getting, i.e bot requests to xmlrpc.php
– available ram/cpu resources

Database:
As you will well know, WP is resource heavy, and there appears to be little thought gone in by plugin developers as to how many database requests they make. You will need a database server that can deal with this level of onslaught.