WordPress is a powerful platform that can manage large databases with ease. Despite the misconception that WordPress can't handle large sites, it is actually capable of handling quite a lot of traffic. With the right web hosting and on-site performance optimizations, WordPress can handle heavy traffic without any issues. W3 Total Cache (W3TC) is a great plugin to use for optimizing WordPress performance.
It helps to ensure that your website is ready to handle large volumes of traffic. Additionally, WordPress has the ability to schedule posts for future publication and Apache and Linux are the strongest platforms for running WordPress. If you're expecting high traffic, it's best to divide your WordPress application into separate layers and serve them independently. You may also want to consider dedicated servers or cloud hosting if you need to host any non-WordPress applications with substantial traffic.
Kinsta is a great option for hosting WordPress, but it's not compatible with other applications. The method chosen to run PHP, the language that interprets the WordPress code, can also affect the performance of your server. Ultimately, WordPress is a popular website builder that can handle even the most strenuous demands of users. With the right plugins and optimizations, you can ensure that your website is ready for large databases and high traffic.