# Speed up WordPress with caching

Clear the page cache, size the Redis object cache and give the database more memory, all from a WordPress site’s Caching tab.

## Before you start

- A running WordPress site in Nuvlo.
- Permission to manage sites.

## Step 1: Open the Caching tab

Open the site and click **Caching**. It has four cards: **Page cache**, **Nuvlo plugin**, **Object cache** and **Database memory**.

![Caching tab with the Page cache, Nuvlo plugin, Object cache and Database memory cards](https://app.nuvlo.dev/docs/shots/wordpress-caching--tab.webp)

## Step 2: Clear the page cache

The page cache keeps ready-made copies of pages, so visitors who aren’t logged in get them without WordPress running. Nginx sites use **Nginx FastCGI cache**, OpenLiteSpeed sites **LiteSpeed Cache**.

If a change doesn’t show up, click **Clear page cache**. With the Nuvlo plugin active, changed pages clear by themselves. See [Use the Nuvlo plugins for WordPress](https://app.nuvlo.dev/docs/nuvlo-wordpress-plugin).

## Step 3: Size the object cache

The object cache is a private Redis cache that stores database results, so pages are built faster. It shows **Allocated**, **In use**, **Hit rate** and **Evictions**.

- **Automatic** grows under load and shrinks after 24 quiet hours. Set **Smallest size** (32 to 256 MB) and **Largest size** (64 MB to 1 GB).
- **Fixed** always uses the **Size** you pick, 32 MB to 1 GB.

Many **Evictions** mean the cache runs out of memory. Raise the largest size, or choose a bigger fixed size. Click **Save object cache**.

![Object cache card with usage figures and the Automatic and Fixed memory choices](https://app.nuvlo.dev/docs/shots/wordpress-caching--object-cache.webp)

## Step 4: Give the database more memory

**Database memory** is what MariaDB keeps for this site’s data, so pages read less from disk. The card shows **Set to**, **Running with** and **Available here**: what the server has set aside for databases, minus what its other sites use.

Pick a **Size** and click **Save database memory**. If the running database can’t grow that far, the button says **Save and restart the database**. The site shows a database error while it restarts.

![Database memory card with Set to, Running with and Available here, and the Size select](https://app.nuvlo.dev/docs/shots/wordpress-caching--database-memory.webp)

## Good to know

- The Redis object cache can’t be turned off on WordPress sites. Choose **Fixed** to keep it small.
- Full-page caching is chosen when you create the site. See [Create a WordPress site](https://app.nuvlo.dev/docs/install-wordpress).

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Source: https://app.nuvlo.dev/docs/wordpress-caching