Title: Cache metrics
Author: WordPress VIP Documentation
Published: April 19, 2024
Last modified: July 31, 2025

---

 1. [Performance](https://docs.wpvip.com/performance/)
 2. [Insights & Metrics](https://docs.wpvip.com/performance/insights-metrics/)
 3. Cache metrics

#  Cache metrics

Insights into an application’s utilization of the VIP Platform’s caching layers 
can be reviewed in [the **Insights & Metrics** panel](https://docs.wpvip.com/performance/insights-metrics/),
located in [the application view of the VIP Dashboard](https://docs.wpvip.com/vip-dashboard/application-view/).

Select the tab labeled “**Cache**” to access metrics for cache utilization by an
environment.

It is important that a WordPress or Node.js application is utilizing the caching
layers as efficiently as possible even during normal windows of time so that it 
is more likely to scale smoothly and quickly during a high traffic event.

## Page Cache Hit Rate

[VIP’s page cache](https://docs.wpvip.com/caching/page-cache/) is the first layer
of caching encountered by each request made to a WordPress or Node.js environment.

The data in “Page Cache Hit Rate” indicates the rate of change in the page cache
hit rate over time for an environment. The page cache hit rate represents the percentage
of attempts to fetch data from the page cache where the data is successfully retrieved.

A low cache hit rate is likely to result in more requests being made to [the origin server](https://docs.wpvip.com/origin-servers/)
which can negatively affect application performance.

![](https://docs.wpvip.com/wp-content/uploads/sites/2/2025/07/Page-Cache-Hit-Rate-
1024x583.png)

Example screenshot of data displayed in the “Page Cache Hit Rate” section of the“
Cache Metrics” tab of the Insights & Metrics panel of the VIP Dashboard.

## Object Cache Hit Rate

**All WordPress environments and qualifying Node.js environments **

[The WordPress object cache](https://docs.wpvip.com/caching/object-cache/) is the
second layer of caching encountered by requests to a WordPress environment that 
pass through the page cache and are routed to the origin servers.

The data in “Object Cache Hit Rate” indicates the percentage of [object cache requests](https://docs.wpvip.com/caching/object-cache/)
where the requested data was successfully retrieved, without needing to retrieve
it directly from the database.

A drop in cache hit rate for the environment’s [object cache](https://docs.wpvip.com/caching/object-cache/)
are indicated by [the **Object Cache Hit Rate** Anomaly Event Type](https://docs.wpvip.com/performance/insights-metrics/anomalies/#3-object-cache-hit-rate)
in the “Object Cache Hit Rate” panel.

[The object cache panel in Query Monitor](https://docs.wpvip.com/query-monitor/#3-object-cache)
can be used to investigate and improve the efficiency of the use of the object cache
by an application.

![](https://docs.wpvip.com/wp-content/uploads/sites/2/2025/07/Object-Cache-Hit-Rate-
1024x499.png)

Example screenshot of data displayed in the “Object Cache Hit Rate” section of the“
Cache Metrics” tab of the Insights & Metrics panel of the VIP Dashboard.

## Object Cache Queries by Type

**All WordPress environments and qualifying Node.js environments **

The data in “Object Cache Queries by Type” indicates the number of [object cache queries](https://docs.wpvip.com/caching/object-cache/)
that are being made by the PHP application, grouped by query type (i.e. Get, Set,
Delete). High query counts can indicate inefficient queries or a high number of 
requests being made to the application.

![](https://docs.wpvip.com/wp-content/uploads/sites/2/2025/07/Object-Cache-Queries-
By-Type-1024x616.png)

Example screenshot of data displayed in the “Object Cache Queries by Type” section
of the “Cache Metrics” tab of the Insights & Metrics panel of the VIP Dashboard.

Last updated: July 31, 2025