Check your HTTP status codes with is a popular bulk HTTP status checker, redirect checker and header checker. You can use this tool to easily check HTTP status codes, status messages, response headers, and redirect chains returned by a server in response to a URL request by clients like a browser or search engine bot.

Disable wp-cron and configure server cron

There is a PHP function built into WordPress which is designed to replicate a cron service, which is activated whenever someone accesses the web site. This is acceptable when only 1-2 people are accessing the site, but as the website usage scales up to dozens of users, this results in an exponential load on the server.