How to optimize and reduce excessive database queries

You can use a combination of caching plugin and appropriately coded themes and plugins to cache query results and speed things up. Yes, eventually if you are running many queries, a site can get bogged down. This typically happens when query-intensive themes or plugins are used.

To start investigating your own site’s queries, there are query monitoring plugins available – try installing one and you will see what queries are running where. From there, you can determine whether plugins or the theme are running the most intensive queries, and either try out alternative themes/plugins or code a child theme to reduce the load. You may also find that using (and properly configuring) a caching plugin may relieve much of the burden. It varies site to site, depending on the underlying server architecture, where visitors are coming from, how many visits you’re getting, and what exactly your site is trying to do.

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