{"id":80903,"date":"2023-03-15T17:17:24","date_gmt":"2023-03-15T17:17:24","guid":{"rendered":"\/tutorials\/?p=80903"},"modified":"2026-03-09T19:18:06","modified_gmt":"2026-03-09T19:18:06","slug":"what-is-object-cache","status":"publish","type":"post","link":"\/ng\/tutorials\/what-is-object-cache\/","title":{"rendered":"What is object cache in WordPress: how it works, different types, and how to enable it"},"content":{"rendered":"

If you are looking for website optimization options, consider utilizing an object cache.<\/p>

A WordPress website consists of many PHP objects that are constantly built, initiated, and removed by the memory manager. However, these actions may overload your server, causing your site to slow down and experience errors.<\/p>

An unresponsive website will result in a poor user experience and turn visitors away, causing financial loss. To prevent this issue, make sure to have object caching enabled on your WordPress site, as it can optimize your server and boost the website’s responsiveness.<\/p>

In this article, you’ll learn what an object cache is, its advantages, and how it can benefit your WordPress website. We’ll also share the best persistent caching solutions on the market – Redis and Memcached.<\/p>

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\n What Is an Object Cache?\n <\/p>\n <\/div>\n

Object caching involves storing database query outcomes, allowing for future requests to be fulfilled from the cache, avoiding constant database queries. Given WordPress’s reliance on databases as a content management system, this process is particularly crucial.<\/p><\/div>\n\n\n\n<\/p>

How Does an Object Cache Work<\/h3>

An object cache reduces repeated and unnecessary queries as it stores the query results from the first request. Let’s see how it works in four steps:<\/p>

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  1. When a user accesses your website, the browser sends an HTTP request to the web server.<\/li>\n\n\n\n
  2. Once the server receives and approves the request, it delivers the data or resources to the browser.<\/li>\n\n\n\n
  3. If you enable object caching on your site, the server will create a copy of the user requests and store them in your cache.<\/li>\n\n\n\n
  4. Whenever the browser sends the same request, the server will deliver the data from the cache instead of querying the database.<\/li>\n<\/ol>

    However, if a copy doesn’t exist, the server will generate a new result and create a copy for future use before sending it back to the user’s browser.<\/p>

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    \n Learn More About Caching <\/p>\n <\/div>\n

    What Is Website Caching<\/a>
    \n    How to Clear Browser Cache<\/a>
    \n    How to Reduce Cache Misses<\/a><\/p>\n <\/div>\n \n\n\n\n<\/p>

    Object Cache Advantages<\/h3>

    In this section, we’ll overview the two most important reasons for using object caching:<\/p>