This site uses WordPress. I have used WordPress for many years. I used to code everything by hand but that became too much to keep track of when I wanted to post regularly. I change to WordPress and have not looked back. I still have plenty of stuff on my site that I hand code by the main core is WordPress.
I use redirection.me to handle 404 errors and try to make sure people don’t get lost on my site. I have had this site for many years and transferred from several domains from the past. There are a lot of older links on the web that point to older pages on my site.
I was going through some settings in that plugin and realized there is a random page redirect option. I am not sure if this is a new option or something I knew about in the past but I know now.