> For the complete documentation index, see [llms.txt](https://redis-cache.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://redis-cache.ortusbooks.com/essentials/usage/ram-resources.md).

# RAM Resources

Lucee has the concept and feature of virtual file systems. Our extension taps into it by allowing you to leverage the [`ram://`](ram://) resource to talk to Redis for storing documents and treating Redis like a big file system. This means that any `file` or `directory` related tag/function can work with a Redis RAM resource like: `fileRead(), fileWrite(), fileDelete(), directoryNew(), directoryList(), include`, etc. It even works when defining application mappings. You can define Redis to be the default cache for `resources` by selecting the `default` element in the cache details page and pointing it to `resource`.

{% hint style="danger" %}
**Important**: Please note that Lucee only allows you to determine 1 cache connection to be the default for either object, template, query, resource or function caching. You might end up creating different cache connections if you want to leverage them as **default** cache locations.
{% endhint %}

Once you setup Redis to be your default `resource` cache you can leverage it in many ways:

```javascript
// Create a mapping to it
this.mappings[ "/cluster-fs" ] = "ram://";


// Do some file operations
fileWrite( "/cluster-fs/suzi.txt", myContent );
include template="/cluster-fs/aop.cfm";
directoryList( "/cluster-fs/caches" );
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://redis-cache.ortusbooks.com/essentials/usage/ram-resources.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.