How to separate the website into different hosts and expand the expansibility? (please enter if you have experience) Linode | Cloudflare | Apache

use Linode host, ubuntu16.04 apache + php + mariadb to set up a website, and cloudflare DNS
currently need to have a shunt mechanism, but I don"t know how to do it.
(currently using Linode 4G scheme)
would like to ask experienced people how to proceed?

there are two different kinds of websites, one is e-commerce and the other is blog (and because the traffic continues to increase, the CPU utilization rate of blog alone has exceeded 33%, and e-commerce has not yet started operation)
while the e-commerce domain is: shop.XXX.com, blog is XXX.com, (implemented using htaccess)
although the two materials themselves are connected, the same host and database There are even a lot of "shared" program scripts (it should be said that it is difficult to "take apart" two different websites)
so it hurts a little bit...
I would like to ask how to move the two sites to two different hosts?
or is there a similar way to achieve a "diversion" mechanism, at least not too much problem when the number of visitors suddenly "explodes"?

have you heard a saying that Facebook may even be a host with a button? )
but it is not impossible. After all, it is reasonable to process 100 million requests per second.
what would you do? Or how to share a lot of experience?

Ubuntu16.04 mariadb linode apache php
Apr.19,2022

Apache is not suitable for directly handling heavy traffic access. You can do a load balancing layer on top of Apache

.

diversion:
1. I don't know whether the code of your two websites is the same, regardless of the difference. To divert, you need at least two servers
2, server A shop.XXX.com , server B shop.XXX.com , and DNS parse streaming

Traffic skyrocketing:
1. Do a load balancing layer and only do proxy forwarding. Whether it is steady or burst, you can use
2. You can achieve load balancing on DNS , estimate traffic, dynamically expand service resources, resolve to the nearest server according to the nearest principle
3, use containerized deployment, estimate traffic, and dynamically expand service resources

.

Previous: How does html5 pop up prompts to be added to the home screen and support browsers on Android?

Next: How to implement push in China without eject in Expo (react native) Project

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bc6659-44d89.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bc6659-44d89.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?