> For the complete documentation index, see [llms.txt](https://docs.novel.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.novel.dev/novel-server/database/caching.md).

# Caching

Novel's philosophy of low overhead affects the function of caching because it do not use traditional caching services.

Caching in Novel makes use of PostgreSQL's `SKIP UNLOGGED` feature. So the caching layer is within the database layer itself.

The cache is located in the `cache` table. 

## Usage

You can use the cache through

{% code title="feature.ts" lineNumbers="true" %}

```typescript
import cache from 'novel/cache';

await cache.set('key', value);

await cache.get('key');
```

{% endcode %}

The cache key is hashed and stored in the cache table.

### `cache.get(key: string)`

You can get a cached value from the database through a simple function.

### `cache.set(key: string, value: any, ttl?: number)`

You can set the value as well as a TTL for the key you want to set

### `cache.clear(key: string)`

Remove a key from the cache.

### `cache.touch(key: string, ttl: number)`

If you want to extend the TTL of a cached key.


---

# 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://docs.novel.dev/novel-server/database/caching.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.