# MNUID Cookie Base Cache

MNUID Cookie Base Cache generates separate cached versions of content based on the MNUID cookie value for Dynamic Content Acceleration resources.

This feature enables session-aware caching while maintaining control over cache lifetime through configurable expiry settings.

{% hint style="info" %}
This feature is available **only for Dynamic CDN Resources**.
{% endhint %}

## How MNUID Cookie Base Cache Works

When **MNUID Cookie Base Cache** is enabled:

* Medianova CDN checks incoming requests for the **MNUID** cookie.
* The value of the **MNUID** cookie is included in the **cache key**.
* Requests with different MNUID values are cached **as separate variants**.
* Cached responses remain valid for the duration defined in **Cookie Expiry Time**.
* After the expiry time elapses, the cached content is refreshed from the origin.

This mechanism allows session-aware caching while maintaining control over cache lifetime.

## Configure MNUID Cookie Base Cache

You can manage MNUID Cookie Base Cache using the [Medianova Control Panel](https://cloud.medianova.com).

{% stepper %}
{% step %}
**Open the Caching Settings**

Log in to the **Medianova Control Panel**, navigate to **CDN → CDN Resources**, select a **Dynamic CDN Resource**, and open the **Caching** tab.
{% endstep %}

{% step %}
**Enable MNUID Cookie Base Cache**

Set **Status** to **On**.

<figure><img src="/files/SoKOZffe278GeVq0sxBA" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}
**Set the Cookie Expiry Time**

Enter the **Cookie Expiry Time** in seconds.

This value defines how long cached content remains valid for requests that include the **MNUID** cookie.
{% endstep %}

{% step %}
**Apply the Configuration**

Select **Submit** to save and apply the changes.
{% endstep %}
{% endstepper %}

* Each unique **MNUID** value creates a **separate cache entry**.
* Cache variation is based on the **cookie value**, not just its presence.
* **Cookie Expiry Time** controls cache validity independently of origin headers.
* Setting a very short expiry time may reduce cache efficiency.
* This feature affects **cache key generation**, not cache bypass.
* Can be combined with **Cookie Base Cache** and **Header Base Cache** for advanced session-aware caching strategies.

## Common Use Cases

* Cache dynamic pages per authenticated user session
* Improve performance for logged-in users while maintaining correctness
* Control cache lifetime for session-based personalization
* Reduce origin load for frequently accessed user-specific content


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